The Big Bang Theory
Cast & Crew
Johnny Galecki Leonard Hofstadter
Jim Parsons Sheldon Cooper
Kaley Cuoco Penny
Simon Helberg Howard Wolowitz
Kunal Nayyar Raj Koothrappali
Mayim Bialik Amy Farrah Fowler
Melissa Rauch Bernadette Rostenkowski
Chuck Lorre Executive Producer
Bill Prady Executive Producer
Steven Molaro Executive Producer
Mark Cendrowski Director
Anthony Rich Director
Kristy Cecil Producer
⨁Full Cast & Crew
Upcoming TV Airings
The airings below are based on a generic national schedule. Times and dates can vary by TV provider.
Thursday, March 26
The Laureate Accumulation
Season 12 • Episode 18
Sheldon and Amy try to win over Nobel laureates Kip Thorne, George Smoot and Frances Arnold.
Thursday, March 26
The Inspiration Deprivation
Season 12 • Episode 19
Wolowitz buys a scooter that looks like the one he had years ago.
Thursday, March 26
The Decision Reverberation
Season 12 • Episode 20
Koothrappali publishes a paper that suggests he may have discovered alien life.
Thursday, March 26
The Plagiarism Schism
Season 12 • Episode 21
Kripke has proof that Dr. Pemberton plagiarized his thesis in college.
Friday, March 27
The Maternal Conclusion
Season 12 • Episode 22
Leonard is pleasantly surprised when Beverly comes to visit, and she's genuinely kind to him.
Friday, March 27
The Pulled Groin Extrapolation
Season 5 • Episode 3
Bernadette, Howard and Mrs. Wolowitz spend the weekend together.
Friday, March 27
The Spaghetti Catalyst
Season 3 • Episode 20
Sheldon goes to extremes to keep Leonard and Penny happy when they stop speaking to each other.
Friday, March 27
The Plimpton Stimulation
Season 3 • Episode 21
Sheldon invites a famous physicist to the apartment, and competes with Leonard for her attention.
Friday, March 27
The Staircase Implementation
Season 3 • Episode 22
Leonard tells Penny about how he met Sheldon and what happened to the elevator.
Friday, March 27
The Lunar Excitation
Season 3 • Episode 23
Raj and Howard set up an online dating profile for Sheldon and find the perfect woman.
Friday, March 27
The Robotic Manipulation
Season 4 • Episode 1
Penny tags along on Sheldon's first date; Wolowitz finds a new use for a robotic arm.
Friday, March 27
The Cruciferous Vegetable Amplification
Season 4 • Episode 2
Sheldon realizes he will not live long enough to download his consciousness into a robot body.
Friday, March 27
The Zazzy Substitution
Season 4 • Episode 3
When Sheldon searches for an alternative to human companionship, the guys become concerned.
Friday, March 27
The Hot Troll Deviation
Season 4 • Episode 4
An embarrassing secret of Wolowitz's is revealed; Raj and Sheldon get into a war at work.
Friday, March 27
The Loobenfeld Decay
Season 1 • Episode 10
Leonard and Sheldon try to avoid seeing Penny perform after hearing her sing.
Friday, March 27
The Change Constant
Season 12 • Episode 23
Sheldon and Amy await big news.
Friday, March 27
The Stockholm Syndrome
Season 12 • Episode 24
Bernadette and Wolowitz leave their kids for the first time; Penny and Leonard try to keep a secret.
Friday, March 27
Pilot
Season 1 • Episode 1
Leonard likes new neighbor Penny, but his roommate thinks he is chasing an impossible dream.
Friday, March 27
The Big Bran Hypothesis
Season 1 • Episode 2
Leonard volunteers to sign for a package, hoping to make a good impression on Penny.
Saturday, March 28
The Fuzzy Boots Corollary
Season 1 • Episode 3
Unhappy that Penny is seeing someone, Leonard summons the courage to ask another woman out.
Saturday, March 28
The Wiggly Finger Catalyst
Season 5 • Episode 4
Raj wants a girlfriend, so Penny introduces him to a woman he can communicate with.
Saturday, March 28
The Birthday Synchronicity
Season 10 • Episode 11
Bernadette and Howard welcome their baby; Amy celebrates her birthday with Sheldon.
Saturday, March 28
The Holiday Summation
Season 10 • Episode 12
Sheldon and Amy visit Penny and Leonard and tell them about their terrible trip to Texas.
Saturday, March 28
The Romance Recalibration
Season 10 • Episode 13
Penny and Amy go on a spa weekend; Wolowitz and Koothrappali try to fix a squeaky floorboard.
Saturday, March 28
The Emotion Detection Automation
Season 10 • Episode 14
Sheldon tests an MIT invention after hearing it can help him read people's emotions.
Saturday, March 28
The Locomotion Reverberation
Season 10 • Episode 15
Leonard and Wolowitz try to distract Sheldon when he slows the progress of their guidance system.
Saturday, March 28
The Allowance Evaporation
Season 10 • Episode 16
Sheldon and Amy have a fight; Koothrappali stops receiving financial support from his father.
Saturday, March 28
The Comic-Con Conundrum
Season 10 • Episode 17
Koothrappali asks Sheldon to help him get out of debt; Penny considers joining Leonard at Comic-Con.
Saturday, March 28
The Escape Hatch Identification
Season 10 • Episode 18
Leonard and Penny offer Sheldon's old room to Raj after he moves out of his apartment.
Saturday, March 28
The Collaboration Fluctuation
Season 10 • Episode 19
Leonard, Penny and Raj adjust to their new arrangement; Sheldon expresses interest in Amy's work.
Saturday, March 28
The Recollection Dissipation
Season 10 • Episode 20
Sheldon collaborates on too many projects; Bernadette nears the end of her maternity leave.
Saturday, March 28
The Zarnecki Incursion
Season 4 • Episode 19
The guys try to figure out who hacked Sheldon's online-game account.
Saturday, March 28
The Luminous Fish Effect
Season 1 • Episode 4
Getting fired gives Sheldon the opportunity to explore life beyond physics.
Saturday, March 28
The Hamburger Postulate
Season 1 • Episode 5
Leonard, trying to get over Penny, has an unexpected encounter with a fellow scientist.
Saturday, March 28
The Dumpling Paradox
Season 1 • Episode 7
Penny sleeps on Leonard and Sheldon's couch when Wolowitz takes over her apartment.
Saturday, March 28
The Grasshopper Experiment
Season 1 • Episode 8
On a blind date, Koothrappali discovers that he can talk to the opposite sex after a few drinks.
Sunday, March 29
The Cooper-Hofstadter Polarization
Season 1 • Episode 9
Penny tries to mediate when Sheldon and Leonard disagree about a physics conference.
Sunday, March 29
The Separation Agitation
Season 10 • Episode 21
Howard and Bernadette struggle to leave Halley in day care; Bert introduces his new girlfriend.
Sunday, March 29
The Cognition Regeneration
Season 10 • Episode 22
Leonard has concerns when Penny considers accepting a job offer from Zack, her ex-boyfriend.
Sunday, March 29
The Gyroscopic Collapse
Season 10 • Episode 23
Leonard, Sheldon and Wolowitz get an unwelcome surprise after completing the Air Force project.
Sunday, March 29
The Long Distance Dissonance
Season 10 • Episode 24
Sheldon's former admirer, Dr. Ramona Nowitzki, resurfaces while Amy is away at Princeton.
Sunday, March 29
The Proposal Proposal
Season 11 • Episode 1
Amy answers Sheldon's marriage proposal; Howard and Bernadette struggle with unexpected news.
Sunday, March 29
The Retraction Reaction
Season 11 • Episode 2
Leonard's job is at stake after he gives an embarrassing radio interview; Amy and Bernadette bond.
Sunday, March 29
The Relaxation Integration
Season 11 • Episode 3
As Sheldon stresses about picking a wedding date, Amy tells him he can be more easygoing.
Sunday, March 29
The Explosion Implosion
Season 11 • Episode 4
Wolowitz and Sheldon bond over having disappointing fathers; Leonard's mother befriends Penny.
Sunday, March 29
The Collaboration Contamination
Season 11 • Episode 5
Penny and Leonard learn a secret from an unlikely source about dealing with Sheldon.
Sunday, March 29
The Proton Regeneration
Season 11 • Episode 6
Sheldon auditions for the role of the new Professor Proton; Penny takes care of Halley.
Sunday, March 29
The Meteorite Manifestation
Season 12 • Episode 14
Leonard is disappointed when his friends exclude him from a scientific project.
Sunday, March 29
The Donation Oscillation
Season 12 • Episode 15
Penny tries to throw a wrench into Leonard's plan to be a sperm donor for her ex-boyfriend.
Sunday, March 29
The D & D Vortex
Season 12 • Episode 16
The gang fights for the one open seat at Wil Wheaton's celebrity Dungeons and Dragons game.
Sunday, March 29
The Conference Valuation
Season 12 • Episode 17
When Penny and Bernadette go to a convention, Wolowitz is left in charge of the kids.
Sunday, March 29
The Laureate Accumulation
Season 12 • Episode 18
Sheldon and Amy try to win over Nobel laureates Kip Thorne, George Smoot and Frances Arnold.
Sunday, March 29
The Inspiration Deprivation
Season 12 • Episode 19
Wolowitz buys a scooter that looks like the one he had years ago.
Sunday, March 29
The Decision Reverberation
Season 12 • Episode 20
Koothrappali publishes a paper that suggests he may have discovered alien life.
Sunday, March 29
The Loobenfeld Decay
Season 1 • Episode 10
Leonard and Sheldon try to avoid seeing Penny perform after hearing her sing.
Sunday, March 29
The Plagiarism Schism
Season 12 • Episode 21
Kripke has proof that Dr. Pemberton plagiarized his thesis in college.
Sunday, March 29
The Pancake Batter Anomaly
Season 1 • Episode 11
Leonard and the boys avoid Sheldon when he gets sick, leaving Penny to nurse him back to health.
Sunday, March 29
The Jerusalem Duality
Season 1 • Episode 12
Sheldon and Leonard look for a way to derail a 15-year-old physics prodigy's research.
Sunday, March 29
The Bat Jar Conjecture
Season 1 • Episode 13
The guys kick Sheldon off the Physics Bowl team and bring his nemesis aboard.
Monday, March 30
The Nerdvana Annihilation
Season 1 • Episode 14
Penny tells the guys their obsession with comics and toys is pathetic.
Monday, March 30
The First Pitch Insufficiency
Season 8 • Episode 3
Wolowitz feels nervous when he is asked to throw the first pitch at a Los Angeles Angels game.
Monday, March 30
The Hook-Up Reverberation
Season 8 • Episode 4
Raj's honesty comes back to haunt him when his new girlfriend is unfriendly to Penny.
Monday, March 30
The Desperation Emanation
Season 4 • Episode 5
Leonard realizes he is the only one in his group without a girlfriend.
Monday, March 30
The Irish Pub Formulation
Season 4 • Episode 6
Leonard keeps an affair a secret from Sheldon, Howard and Raj.
Monday, March 30
The Apology Insufficiency
Season 4 • Episode 7
Sheldon's interview with the FBI jeopardizes Wolowitz's security clearance.
Monday, March 30
The 21-Second Excitation
Season 4 • Episode 8
The guys camp out for a movie screening; Penny and Bernadette invite Amy to her first slumber party.
Monday, March 30
The Boyfriend Complexity
Season 4 • Episode 9
Penny asks Leonard to lie to her father; an all-nighter at a telescope.
Monday, March 30
The Alien Parasite Hypothesis
Season 4 • Episode 10
Koothrappali and Wolowitz try to prove who would be a better superhero.
Monday, March 30
The Justice League Recombination
Season 4 • Episode 11
The guys try to bond with Penny's new boyfriend through a costume contest.
Monday, March 30
The Bus Pants Utilization
Season 4 • Episode 12
Leonard's idea for a smartphone application causes friction in his friendship with Sheldon.
Monday, March 30
The Luminous Fish Effect
Season 1 • Episode 4
Getting fired gives Sheldon the opportunity to explore life beyond physics.
Monday, March 30
The Pancake Batter Anomaly
Season 1 • Episode 11
Leonard and the boys avoid Sheldon when he gets sick, leaving Penny to nurse him back to health.
Monday, March 30
The Middle Earth Paradigm
Season 1 • Episode 6
Leonard, Sheldon, Wolowitz and Koothrappali attend Penny's Halloween party.
Monday, March 30
The Dumpling Paradox
Season 1 • Episode 7
Penny sleeps on Leonard and Sheldon's couch when Wolowitz takes over her apartment.
Monday, March 30
The Grasshopper Experiment
Season 1 • Episode 8
On a blind date, Koothrappali discovers that he can talk to the opposite sex after a few drinks.
Monday, March 30
The Cooper-Hofstadter Polarization
Season 1 • Episode 9
Penny tries to mediate when Sheldon and Leonard disagree about a physics conference.
Monday, March 30
The Loobenfeld Decay
Season 1 • Episode 10
Leonard and Sheldon try to avoid seeing Penny perform after hearing her sing.
Monday, March 30
The Jerusalem Duality
Season 1 • Episode 12
Sheldon and Leonard look for a way to derail a 15-year-old physics prodigy's research.
Monday, March 30
The Bat Jar Conjecture
Season 1 • Episode 13
The guys kick Sheldon off the Physics Bowl team and bring his nemesis aboard.
Monday, March 30
The Nerdvana Annihilation
Season 1 • Episode 14
Penny tells the guys their obsession with comics and toys is pathetic.
Tuesday, March 31
The Codpiece Topology
Season 2 • Episode 2
Leonard rushes into a rebound relationship with Sheldon's nemesis.
Tuesday, March 31
The Russian Rocket Reaction
Season 5 • Episode 5
Wil Wheaton invites Leonard and Sheldon to a party at his house; Howard receives an opportunity.
Tuesday, March 31
The Pork Chop Indeterminacy
Season 1 • Episode 15
Leonard, Wolowitz and Koothrappali fall for Sheldon's twin sister.
Tuesday, March 31
The Peanut Reaction
Season 1 • Episode 16
Penny learns that Leonard does not celebrate birthdays, so she plans a surprise party.
Tuesday, March 31
The Tangerine Factor
Season 1 • Episode 17
Leonard finally works up the courage to ask Penny out on a date, and both ask Sheldon for advice.
Tuesday, March 31
The Pancake Batter Anomaly
Season 1 • Episode 11
Leonard and the boys avoid Sheldon when he gets sick, leaving Penny to nurse him back to health.
Tuesday, March 31
The Bad Fish Paradigm
Season 2 • Episode 1
Penny's first date with Leonard goes awry; Penny finds Sheldon to be an unwilling confidant.
Tuesday, March 31
The Codpiece Topology
Season 2 • Episode 2
Leonard rushes into a rebound relationship with Sheldon's nemesis.
Tuesday, March 31
The Barbarian Sublimation
Season 2 • Episode 3
Sheldon creates a monster when he introduces Penny to online gaming.
Tuesday, March 31
The Jerusalem Duality
Season 1 • Episode 12
Sheldon and Leonard look for a way to derail a 15-year-old physics prodigy's research.
Tuesday, March 31
The Euclid Alternative
Season 2 • Episode 5
Leonard and his friends stage an intervention to force Sheldon to face his fear of driving.
Tuesday, March 31
The Cooper-Nowitzki Theorem
Season 2 • Episode 6
Sheldon and the gang are confused when a young grad student is attracted to him.
Tuesday, March 31
The Barbarian Sublimation
Season 2 • Episode 3
Sheldon creates a monster when he introduces Penny to online gaming.
Tuesday, March 31
The Griffin Equivalency
Season 2 • Episode 4
Raj gets an inflated ego and makes a play for Penny after being referenced in a magazine article.
Tuesday, March 31
The Euclid Alternative
Season 2 • Episode 5
Leonard and his friends stage an intervention to force Sheldon to face his fear of driving.
Tuesday, March 31
The Cooper-Nowitzki Theorem
Season 2 • Episode 6
Sheldon and the gang are confused when a young grad student is attracted to him.
Wednesday, April 1
The Panty Piñata Polarization
Season 2 • Episode 7
Sheldon bans Penny from the apartment for a series of petty infractions; she vows to get revenge.
Wednesday, April 1
The Rhinitis Revelation
Season 5 • Episode 6
Sheldon finds himself competing with the gang for his mother's attention when she visits.
Wednesday, April 1
The Love Car Displacement
Season 4 • Episode 13
Bernadette runs into her ex-boyfriend (Rick Fox) while attending a science event with Wolowitz.
Wednesday, April 1
The Thespian Catalyst
Season 4 • Episode 14
Sheldon takes acting lessons from Penny in hope of becoming a better teacher.
Wednesday, April 1
The Benefactor Factor
Season 4 • Episode 15
A wealthy donor makes Leonard question what he is willing to do for science.
Wednesday, April 1
The Cohabitation Formulation
Season 4 • Episode 16
Wolowitz considers taking things with Bernadette to the next level.
Wednesday, April 1
The Toast Derivation
Season 4 • Episode 17
Sheldon is upset when he realizes Leonard is the center of their group of friends.
Wednesday, April 1
The Prestidigitation Approximation
Season 4 • Episode 18
Leonard must choose between Penny and his new girlfriend, Priya.
Wednesday, April 1
The Bachelor Party Corrosion
Season 9 • Episode 3
A flat tire during Leonard's bachelor party weekend in Mexico tests the guys' skills.
Wednesday, April 1
The Bat Jar Conjecture
Season 1 • Episode 13
The guys kick Sheldon off the Physics Bowl team and bring his nemesis aboard.
Wednesday, April 1
The Lizard-Spock Expansion
Season 2 • Episode 8
Leonard inadvertently steals away the new woman Wolowitz thinks is the love of his life.
Wednesday, April 1
The White Asparagus Triangulation
Season 2 • Episode 9
Sheldon is thrilled when Leonard starts dating a woman who meets Sheldon's stringent standards.
Wednesday, April 1
The Vartabedian Conundrum
Season 2 • Episode 10
Leonard asks Penny for advice when his new relationship starts moving too fast.
Wednesday, April 1
The Killer Robot Instability
Season 2 • Episode 12
The guys lose their most important teammate in an upcoming fighting-robot competition.
Thursday, April 2
The Friendship Algorithm
Season 2 • Episode 13
Sheldon develops a scientific procedure for making friends; Kripke controls a new supercomputer.
Thursday, April 2
The Isolation Permutation
Season 5 • Episode 8
Amy is devastated when Penny and Bernadette shop for wedding dresses without her.
Thursday, April 2
The Separation Agitation
Season 10 • Episode 21
Howard and Bernadette struggle to leave Halley in day care; Bert introduces his new girlfriend.
Thursday, April 2
The Cognition Regeneration
Season 10 • Episode 22
Leonard has concerns when Penny considers accepting a job offer from Zack, her ex-boyfriend.
Thursday, April 2
The Gyroscopic Collapse
Season 10 • Episode 23
Leonard, Sheldon and Wolowitz get an unwelcome surprise after completing the Air Force project.
Thursday, April 2
The Long Distance Dissonance
Season 10 • Episode 24
Sheldon's former admirer, Dr. Ramona Nowitzki, resurfaces while Amy is away at Princeton.
Thursday, April 2
The Proposal Proposal
Season 11 • Episode 1
Amy answers Sheldon's marriage proposal; Howard and Bernadette struggle with unexpected news.
Thursday, April 2
The Retraction Reaction
Season 11 • Episode 2
Leonard's job is at stake after he gives an embarrassing radio interview; Amy and Bernadette bond.
Thursday, April 2
The Relaxation Integration
Season 11 • Episode 3
As Sheldon stresses about picking a wedding date, Amy tells him he can be more easygoing.
Thursday, April 2
The Nerdvana Annihilation
Season 1 • Episode 14
Penny tells the guys their obsession with comics and toys is pathetic.
Thursday, April 2
The Collaboration Contamination
Season 11 • Episode 5
Penny and Leonard learn a secret from an unlikely source about dealing with Sheldon.
Thursday, April 2
The Proton Regeneration
Season 11 • Episode 6
Sheldon auditions for the role of the new Professor Proton; Penny takes care of Halley.
Thursday, April 2
The Geology Methodology
Season 11 • Episode 7
Sheldon tries to keep his collaboration with Bert a secret; Penny and Bernadette coach Koothrappali.
Thursday, April 2
The Tesla Recoil
Season 11 • Episode 8
Leonard and Wolowitz are furious to learn Sheldon worked with the military behind their backs.
Thursday, April 2
The Bitcoin Entanglement
Season 11 • Episode 9
Sheldon tries to teach the guys a lesson after being cut out of a potentially valuable investment.
Thursday, April 2
The Confidence Erosion
Season 11 • Episode 10
Sheldon and Amy try to use math to eliminate wedding planning stress.
Thursday, April 2
The Celebration Reverberation
Season 11 • Episode 11
Sheldon plans a dinner for Amy's birthday; Leonard receives a Christmas letter from his brother.
Thursday, April 2
The Matrimonial Metric
Season 11 • Episode 12
Sheldon and Amy subject their friends to experiments; Penny reveals her feelings about Amy.
Friday, April 3
The Work Song Nanocluster
Season 2 • Episode 18
Penny's home business turns into a complete nightmare when Sheldon takes over.
Friday, April 3
The Ornithophobia Diffusion
Season 5 • Episode 9
Leonard and Penny spend time alone; Sheldon tries to face his fear of birds.
Friday, April 3
The Zarnecki Incursion
Season 4 • Episode 19
The guys try to figure out who hacked Sheldon's online-game account.
Friday, April 3
The Herb Garden Germination
Season 4 • Episode 20
Howard decides to take a big step in his relationship with Bernadette.
Friday, April 3
The Agreement Dissection
Season 4 • Episode 21
Priya dissects the roommate agreement; the ladies take Sheldon dancing.
Friday, April 3
The Wildebeest Implementation
Season 4 • Episode 22
Raj tries to cure his social anxiety; Penny spies on Leonard and his girlfriend through Bernadette.
Friday, April 3
The Engagement Reaction
Season 4 • Episode 23
Howard's mom winds up in the hospital after hearing news of her son's engagement to Bernadette.
Friday, April 3
The Roommate Transmogrification
Season 4 • Episode 24
Bernadette gets her Ph.D., inspiring the guys to tease Wolowitz about his lack of a doctorate.
Friday, April 3
The Skank Reflex Analysis
Season 5 • Episode 1
Penny worries that she has ruined her relationship with her friends.
Friday, April 3
The Infestation Hypothesis
Season 5 • Episode 2
Amy is caught in the middle when Penny and Sheldon argue over a pre-owned chair.
Friday, April 3
The Gates Excitation
Season 11 • Episode 18
Penny gets the opportunity to host Bill Gates at work when his company wants to partner with hers.
Friday, April 3
The Tenant Disassociation
Season 11 • Episode 19
Leonard decides to run against Sheldon for president of the tenants' association.
Friday, April 3
The Pork Chop Indeterminacy
Season 1 • Episode 15
Leonard, Wolowitz and Koothrappali fall for Sheldon's twin sister.
Friday, April 3
The Dead Hooker Juxtaposition
Season 2 • Episode 19
Penny has a rivalry with a new neighbor who threatens her position as queen bee of the building.
Friday, April 3
The Hofstadter Isotope
Season 2 • Episode 20
Wolowitz and Leonard decide to check out a local bar on Ladies' Night.
Friday, April 3
The Vegas Renormalization
Season 2 • Episode 21
Koothrappali and Leonard take Wolowitz to Las Vegas; Sheldon gets locked out of his apartment.
Friday, April 3
The Classified Materials Turbulence
Season 2 • Episode 22
Penny makes a surprising revelation about Leonard while on her date with Stuart.
Saturday, April 4
The Monopolar Expedition
Season 2 • Episode 23
Leonard and Penny re-evaluate their feelings for each other when he prepares for a three-month trip.
Saturday, April 4
The Geology Methodology
Season 11 • Episode 7
Sheldon tries to keep his collaboration with Bert a secret; Penny and Bernadette coach Koothrappali.
Saturday, April 4
The Tesla Recoil
Season 11 • Episode 8
Leonard and Wolowitz are furious to learn Sheldon worked with the military behind their backs.
Saturday, April 4
The Bitcoin Entanglement
Season 11 • Episode 9
Sheldon tries to teach the guys a lesson after being cut out of a potentially valuable investment.
Saturday, April 4
The Confidence Erosion
Season 11 • Episode 10
Sheldon and Amy try to use math to eliminate wedding planning stress.
Saturday, April 4
The Celebration Reverberation
Season 11 • Episode 11
Sheldon plans a dinner for Amy's birthday; Leonard receives a Christmas letter from his brother.
Saturday, April 4
The Matrimonial Metric
Season 11 • Episode 12
Sheldon and Amy subject their friends to experiments; Penny reveals her feelings about Amy.
Saturday, April 4
The Solo Oscillation
Season 11 • Episode 13
Sheldon kicks Amy out to work solo; Amy and Leonard bond during a series of science experiments.
Saturday, April 4
The Separation Triangulation
Season 11 • Episode 14
Koothrappali learns the woman he's dating has a very upset husband; Sheldon rents his old room.
Saturday, April 4
The Novelization Correlation
Season 11 • Episode 15
Sheldon petitions Wil Wheaton to appear on his show, but Wil offers a role to Amy instead.
Saturday, April 4
The Neonatal Nomenclature
Season 11 • Episode 16
When Bernadette won't go into labor, her friends try different tactics to get things started.
Saturday, April 4
The Roommate Transmogrification
Season 4 • Episode 24
Bernadette gets her Ph.D., inspiring the guys to tease Wolowitz about his lack of a doctorate.
Saturday, April 4
The Electric Can Opener Fluctuation
Season 3 • Episode 1
A betrayal threatens the guys' relationship with Sheldon as well as Leonard's chances with Penny.
Saturday, April 4
The Jiminy Conjecture
Season 3 • Episode 2
Penny and Leonard try to recover from an awkward hookup; Howard and Sheldon make a high-stakes bet.
Saturday, April 4
The Gothowitz Deviation
Season 3 • Episode 3
Sheldon tries chocolate-based behavior modification on Penny; Howard and Raj hit a Goth nightclub.
Saturday, April 4
The Pirate Solution
Season 3 • Episode 4
Raj faces deportation if he doesn't find a job; Leonard and Penny deal with Howard as a third wheel.
Sunday, April 5
The Creepy Candy Coating Corollary
Season 3 • Episode 5
Sheldon seeks revenge on his nemesis; Wolowitz wants Penny to set him up with one of her friends.
Sunday, April 5
The Athenaeum Allocation
Season 11 • Episode 17
Leonard jumps through hoops to help secure the perfect wedding venue for Sheldon and Amy.
Sunday, April 5
The Gates Excitation
Season 11 • Episode 18
Penny gets the opportunity to host Bill Gates at work when his company wants to partner with hers.
Sunday, April 5
The Tenant Disassociation
Season 11 • Episode 19
Leonard decides to run against Sheldon for president of the tenants' association.
Sunday, April 5
The Reclusive Potential
Season 11 • Episode 20
A brilliant but reclusive scientist invites Sheldon to his cabin in the middle of nowhere.
Sunday, April 5
The Comet Polarization
Season 11 • Episode 21
Friendships are threatened when Koothrappali takes credit for Penny's astronomical discovery.
Sunday, April 5
The Monetary Insufficiency
Season 11 • Episode 22
Sheldon tries to win money for science; Penny and Bernadette take Amy wedding dress shopping.
Sunday, April 5
The Sibling Realignment
Season 11 • Episode 23
Sheldon's mother won't attend his wedding unless he invites his brother.
Sunday, April 5
The Bow Tie Asymmetry
Season 11 • Episode 24
Amy's parents and Sheldon's family arrive; nearly everybody is focused on the wedding plans.
Sunday, April 5
The Conjugal Configuration
Season 12 • Episode 1
Penny and Leonard discover they are uncomfortably similar to Amy's parents.
Sunday, April 5
The Wedding Gift Wormhole
Season 12 • Episode 2
Sheldon and Amy go crazy trying to figure out what Leonard and Penny gave them for their wedding.
Sunday, April 5
The Bow Tie Asymmetry
Season 11 • Episode 24
Amy's parents and Sheldon's family arrive; nearly everybody is focused on the wedding plans.
Sunday, April 5
The Conjugal Configuration
Season 12 • Episode 1
Penny and Leonard discover they are uncomfortably similar to Amy's parents.
Sunday, April 5
The Wedding Gift Wormhole
Season 12 • Episode 2
Sheldon and Amy go crazy trying to figure out what Leonard and Penny gave them for their wedding.
Sunday, April 5
The Procreation Calculation
Season 12 • Episode 3
Stuart starts bringing his new girlfriend home; Koothrappali explores an arranged marriage.
Sunday, April 5
The Tam Turbulence
Season 12 • Episode 4
Sheldon won't tell anyone why he's never mentioned Tam, his childhood best friend.
Sunday, April 5
The Planetarium Collision
Season 12 • Episode 5
When Amy doesn't have time to work on super-asymmetry, Sheldon schemes to ensure she's available.
Sunday, April 5
The Imitation Perturbation
Season 12 • Episode 6
Sheldon seeks retaliation when Wolowitz dresses up as Sheldon for Halloween.
Sunday, April 5
The Cornhusker Vortex
Season 3 • Episode 6
Sheldon teaches Leonard about football; kite-fighting threatens Howard and Raj's friendship.
Sunday, April 5
The Grant Allocation Derivation
Season 12 • Episode 7
Leonard struggles when he's given the responsibility of distributing extra grant money.
Sunday, April 5
The Guitarist Amplification
Season 3 • Episode 7
Sheldon tries to make peace when Leonard and Penny get into an argument.
Sunday, April 5
The Adhesive Duck Deficiency
Season 3 • Episode 8
Penny is forced to rely on Sheldon when she is injured while Howard, Leonard and Raj are away.
Sunday, April 5
The Vengeance Formulation
Season 3 • Episode 9
After being humiliated on the radio, Sheldon vows to destroy Kripke.
Monday, April 6
The Gorilla Experiment
Season 3 • Episode 10
Sheldon tries to help Penny understand Leonard's work; Wolowitz gets jealous.
Monday, April 6
The Focus Attenuation
Season 8 • Episode 5
During their weekend in Las Vegas, Bernadette and Amy accuse Penny of being a buzz kill.
Monday, April 6
The Expedition Approximation
Season 8 • Episode 6
Raj and Sheldon try to simulate a dark-matter research expedition; Penny and Leonard have a fight.
Monday, April 6
The Pulled Groin Extrapolation
Season 5 • Episode 3
Bernadette, Howard and Mrs. Wolowitz spend the weekend together.
Monday, April 6
The Wiggly Finger Catalyst
Season 5 • Episode 4
Raj wants a girlfriend, so Penny introduces him to a woman he can communicate with.
Monday, April 6
The Russian Rocket Reaction
Season 5 • Episode 5
Wil Wheaton invites Leonard and Sheldon to a party at his house; Howard receives an opportunity.
Monday, April 6
The Rhinitis Revelation
Season 5 • Episode 6
Sheldon finds himself competing with the gang for his mother's attention when she visits.
Monday, April 6
The Good Guy Fluctuation
Season 5 • Episode 7
An attractive comic book artist tests Leonard and Priya's relationship.
Monday, April 6
The Isolation Permutation
Season 5 • Episode 8
Amy is devastated when Penny and Bernadette shop for wedding dresses without her.
Monday, April 6
The Ornithophobia Diffusion
Season 5 • Episode 9
Leonard and Penny spend time alone; Sheldon tries to face his fear of birds.
Monday, April 6
The Flaming Spittoon Acquisition
Season 5 • Episode 10
Sheldon is jealous when Stuart, from the comic book store, asks Amy out on a date.
Monday, April 6
The Peanut Reaction
Season 1 • Episode 16
Penny learns that Leonard does not celebrate birthdays, so she plans a surprise party.
Monday, April 6
The Terminator Decoupling
Season 2 • Episode 17
Leonard, Sheldon and Wolowitz are ecstatic to learn that a sci-fi actress is aboard their train.
Monday, April 6
The Monopolar Expedition
Season 2 • Episode 23
Leonard and Penny re-evaluate their feelings for each other when he prepares for a three-month trip.
Monday, April 6
The Psychic Vortex
Season 3 • Episode 12
Sheldon and Koothrappali attend a mixer; Leonard discovers that Penny believes in psychics.
Monday, April 6
The Bozeman Reaction
Season 3 • Episode 13
Leonard and Sheldon turn to their friends to create a state-of-the-art security system.
Tuesday, April 7
The Einstein Approximation
Season 3 • Episode 14
Sheldon tries to figure out the answer to a physics problem by working with Penny.
Tuesday, April 7
The Speckerman Recurrence
Season 5 • Episode 11
Leonard must face the bully who targeted him in high school; Penny confronts her past actions.
Tuesday, April 7
The Confirmation Polarization
Season 12 • Episode 13
A rival team of physicists tries to take credit for Amy and Sheldon's super asymmetry theory.
Tuesday, April 7
The Meteorite Manifestation
Season 12 • Episode 14
Leonard is disappointed when his friends exclude him from a scientific project.
Tuesday, April 7
The Donation Oscillation
Season 12 • Episode 15
Penny tries to throw a wrench into Leonard's plan to be a sperm donor for her ex-boyfriend.
Tuesday, April 7
The D & D Vortex
Season 12 • Episode 16
The gang fights for the one open seat at Wil Wheaton's celebrity Dungeons and Dragons game.
Tuesday, April 7
The Conference Valuation
Season 12 • Episode 17
When Penny and Bernadette go to a convention, Wolowitz is left in charge of the kids.
Tuesday, April 7
The Tangerine Factor
Season 1 • Episode 17
Leonard finally works up the courage to ask Penny out on a date, and both ask Sheldon for advice.
Tuesday, April 7
The Love Car Displacement
Season 4 • Episode 13
Bernadette runs into her ex-boyfriend (Rick Fox) while attending a science event with Wolowitz.
Tuesday, April 7
The Vacation Solution
Season 5 • Episode 16
When Sheldon is forced to take a vacation, he goes to work with Amy in her neurobiology lab.
Tuesday, April 7
The Large Hadron Collision
Season 3 • Episode 15
Leonard must choose who to bring with him when he goes to see the Large Hadron Collider.
Tuesday, April 7
The Excelsior Acquisition
Season 3 • Episode 16
Sheldon ends up in traffic court after getting a ticket because of Penny.
Wednesday, April 8
The Precious Fragmentation
Season 3 • Episode 17
A ring from "The Lord of the Rings" at a garage sale threatens to tear the guys apart.
Wednesday, April 8
The Shiny Trinket Maneuver
Season 5 • Episode 12
Amy is upset with Sheldon when he isn't impressed with her recent accomplishment.
Wednesday, April 8
The Speckerman Recurrence
Season 5 • Episode 11
Leonard must face the bully who targeted him in high school; Penny confronts her past actions.
Wednesday, April 8
The Shiny Trinket Maneuver
Season 5 • Episode 12
Amy is upset with Sheldon when he isn't impressed with her recent accomplishment.
Wednesday, April 8
The Recombination Hypothesis
Season 5 • Episode 13
Everything could change when Leonard spontaneously invites Penny to a romantic dinner.
Wednesday, April 8
The Beta Test Initiation
Season 5 • Episode 14
Penny and Leonard experiment with their new relationship; Raj forms an unusual bond.
Wednesday, April 8
The Friendship Contraction
Season 5 • Episode 15
Leonard starts to reconsider his friendship with Sheldon; Wolowitz tries to choose a nickname.
Wednesday, April 8
The Vacation Solution
Season 5 • Episode 16
When Sheldon is forced to take a vacation, he goes to work with Amy in her neurobiology lab.
Wednesday, April 8
The Stockholm Syndrome
Season 12 • Episode 24
Bernadette and Wolowitz leave their kids for the first time; Penny and Leonard try to keep a secret.
Wednesday, April 8
The Bad Fish Paradigm
Season 2 • Episode 1
Penny's first date with Leonard goes awry; Penny finds Sheldon to be an unwilling confidant.
Wednesday, April 8
The Locomotion Interruption
Season 8 • Episode 1
Leonard and Amy make an unexpected trip to Arizona to fetch Sheldon; Penny goes for an interview.
Wednesday, April 8
The Focus Attenuation
Season 8 • Episode 5
During their weekend in Las Vegas, Bernadette and Amy accuse Penny of being a buzz kill.
Wednesday, April 8
The Skywalker Incursion
Season 8 • Episode 19
While on their way to UC Berkeley, Sheldon and Leonard take a detour in hope of meeting an idol.
Wednesday, April 8
The Pants Alternative
Season 3 • Episode 18
Sheldon's stage fright stands between him and a coveted award.
Thursday, April 9
The Wheaton Recurrence
Season 3 • Episode 19
Penny and Leonard have a fight that threatens their relationship; Sheldon and Wil Wheaton face off.
Thursday, April 9
The Recombination Hypothesis
Season 5 • Episode 13
Everything could change when Leonard spontaneously invites Penny to a romantic dinner.
Thursday, April 9
The Big Bran Hypothesis
Season 1 • Episode 2
Leonard volunteers to sign for a package, hoping to make a good impression on Penny.
Thursday, April 9
The Fuzzy Boots Corollary
Season 1 • Episode 3
Unhappy that Penny is seeing someone, Leonard summons the courage to ask another woman out.
Thursday, April 9
The Luminous Fish Effect
Season 1 • Episode 4
Getting fired gives Sheldon the opportunity to explore life beyond physics.
Thursday, April 9
The Hamburger Postulate
Season 1 • Episode 5
Leonard, trying to get over Penny, has an unexpected encounter with a fellow scientist.
Thursday, April 9
The Middle Earth Paradigm
Season 1 • Episode 6
Leonard, Sheldon, Wolowitz and Koothrappali attend Penny's Halloween party.
Thursday, April 9
The Dumpling Paradox
Season 1 • Episode 7
Penny sleeps on Leonard and Sheldon's couch when Wolowitz takes over her apartment.
Thursday, April 9
The Codpiece Topology
Season 2 • Episode 2
Leonard rushes into a rebound relationship with Sheldon's nemesis.
Thursday, April 9
The Cooper-Hofstadter Polarization
Season 1 • Episode 9
Penny tries to mediate when Sheldon and Leonard disagree about a physics conference.
Thursday, April 9
The Loobenfeld Decay
Season 1 • Episode 10
Leonard and Sheldon try to avoid seeing Penny perform after hearing her sing.
Thursday, April 9
The Pancake Batter Anomaly
Season 1 • Episode 11
Leonard and the boys avoid Sheldon when he gets sick, leaving Penny to nurse him back to health.
Thursday, April 9
The Jerusalem Duality
Season 1 • Episode 12
Sheldon and Leonard look for a way to derail a 15-year-old physics prodigy's research.
Thursday, April 9
The Bat Jar Conjecture
Season 1 • Episode 13
The guys kick Sheldon off the Physics Bowl team and bring his nemesis aboard.
Thursday, April 9
The Nerdvana Annihilation
Season 1 • Episode 14
Penny tells the guys their obsession with comics and toys is pathetic.
Thursday, April 9
The Spaghetti Catalyst
Season 3 • Episode 20
Sheldon goes to extremes to keep Leonard and Penny happy when they stop speaking to each other.
Thursday, April 9
The Plimpton Stimulation
Season 3 • Episode 21
Sheldon invites a famous physicist to the apartment, and competes with Leonard for her attention.
Friday, April 10
The Staircase Implementation
Season 3 • Episode 22
Leonard tells Penny about how he met Sheldon and what happened to the elevator.
Friday, April 10
The Beta Test Initiation
Season 5 • Episode 14
Penny and Leonard experiment with their new relationship; Raj forms an unusual bond.
Friday, April 10
The Rothman Disintegration
Season 5 • Episode 17
Sheldon and Kripke compete for a corner office; Penny receives a gift from Amy.
Friday, April 10
The Werewolf Transformation
Season 5 • Episode 18
Sheldon's routine is turned upside down when his barber gets sick.
Friday, April 10
The Weekend Vortex
Season 5 • Episode 19
Sheldon chooses to participate in a guys-only weekend gaming marathon rather than joining Amy.
Friday, April 10
The Transporter Malfunction
Season 5 • Episode 20
After receiving new "Star Trek" collectibles, Sheldon finds himself haunted by Mr. Spock.
Friday, April 10
The Hawking Excitation
Season 5 • Episode 21
When Wolowitz works with Stephen Hawking, Sheldon is determined to meet the famous scientist.
Friday, April 10
The Stag Convergence
Season 5 • Episode 22
Knowledge of Howard's sexual history makes Bernadette reconsider their future together.
Friday, April 10
The Launch Acceleration
Season 5 • Episode 23
Wedding plans are jeopardized when NASA reschedules Howard's mission; Leonard surprises Penny.
Friday, April 10
The Countdown Reflection
Season 5 • Episode 24
The gang tries to help Wolowitz and Bernadette get married before the space launch.
Friday, April 10
The Griffin Equivalency
Season 2 • Episode 4
Raj gets an inflated ego and makes a play for Penny after being referenced in a magazine article.
Friday, April 10
The Euclid Alternative
Season 2 • Episode 5
Leonard and his friends stage an intervention to force Sheldon to face his fear of driving.
Friday, April 10
The Cooper-Nowitzki Theorem
Season 2 • Episode 6
Sheldon and the gang are confused when a young grad student is attracted to him.
Friday, April 10
The Panty Piñata Polarization
Season 2 • Episode 7
Sheldon bans Penny from the apartment for a series of petty infractions; she vows to get revenge.
Friday, April 10
The Change Constant
Season 12 • Episode 23
Sheldon and Amy await big news.
Friday, April 10
The Stockholm Syndrome
Season 12 • Episode 24
Bernadette and Wolowitz leave their kids for the first time; Penny and Leonard try to keep a secret.
Friday, April 10
The Lunar Excitation
Season 3 • Episode 23
Raj and Howard set up an online dating profile for Sheldon and find the perfect woman.
Friday, April 10
The Robotic Manipulation
Season 4 • Episode 1
Penny tags along on Sheldon's first date; Wolowitz finds a new use for a robotic arm.
Saturday, April 11
The Cruciferous Vegetable Amplification
Season 4 • Episode 2
Sheldon realizes he will not live long enough to download his consciousness into a robot body.
Saturday, April 11
The Friendship Contraction
Season 5 • Episode 15
Leonard starts to reconsider his friendship with Sheldon; Wolowitz tries to choose a nickname.
Saturday, April 11
The Procreation Calculation
Season 12 • Episode 3
Stuart starts bringing his new girlfriend home; Koothrappali explores an arranged marriage.
Saturday, April 11
The Tam Turbulence
Season 12 • Episode 4
Sheldon won't tell anyone why he's never mentioned Tam, his childhood best friend.
Saturday, April 11
The Planetarium Collision
Season 12 • Episode 5
When Amy doesn't have time to work on super-asymmetry, Sheldon schemes to ensure she's available.
Saturday, April 11
The Imitation Perturbation
Season 12 • Episode 6
Sheldon seeks retaliation when Wolowitz dresses up as Sheldon for Halloween.
Saturday, April 11
The Grant Allocation Derivation
Season 12 • Episode 7
Leonard struggles when he's given the responsibility of distributing extra grant money.
Saturday, April 11
The Consummation Deviation
Season 12 • Episode 8
Sheldon tries to bond with Amy's father; Wolowitz lures Mr. Fowler away with magic tricks.
Saturday, April 11
The Citation Negation
Season 12 • Episode 9
Sheldon and Amy are devastated after learning that Super Asymmetry has already been disproved.
Saturday, April 11
The VCR Illumination
Season 12 • Episode 10
A VHS tape from Sheldon's past inspires him not to give up; Bernadette tries to help Wolowitz.
Saturday, April 11
The Paintball Scattering
Season 12 • Episode 11
Penny and Leonard organize a paintball game, which results in mayhem due to Sheldon's jealousy.
Saturday, April 11
The Propagation Proposition
Season 12 • Episode 12
Penny's ex-boyfriend Zack learns that he is infertile, so he asks Leonard for help.
Saturday, April 11
The Zazzy Substitution
Season 4 • Episode 3
When Sheldon searches for an alternative to human companionship, the guys become concerned.
Saturday, April 11
The Hot Troll Deviation
Season 4 • Episode 4
An embarrassing secret of Wolowitz's is revealed; Raj and Sheldon get into a war at work.
Saturday, April 11
The Desperation Emanation
Season 4 • Episode 5
Leonard realizes he is the only one in his group without a girlfriend.
Saturday, April 11
The Irish Pub Formulation
Season 4 • Episode 6
Leonard keeps an affair a secret from Sheldon, Howard and Raj.
Sunday, April 12
The Apology Insufficiency
Season 4 • Episode 7
Sheldon's interview with the FBI jeopardizes Wolowitz's security clearance.
Sunday, April 12
The Confirmation Polarization
Season 12 • Episode 13
A rival team of physicists tries to take credit for Amy and Sheldon's super asymmetry theory.
Sunday, April 12
The Meteorite Manifestation
Season 12 • Episode 14
Leonard is disappointed when his friends exclude him from a scientific project.
Sunday, April 12
The Donation Oscillation
Season 12 • Episode 15
Penny tries to throw a wrench into Leonard's plan to be a sperm donor for her ex-boyfriend.
Sunday, April 12
The D & D Vortex
Season 12 • Episode 16
The gang fights for the one open seat at Wil Wheaton's celebrity Dungeons and Dragons game.
Sunday, April 12
The Conference Valuation
Season 12 • Episode 17
When Penny and Bernadette go to a convention, Wolowitz is left in charge of the kids.
Sunday, April 12
The Laureate Accumulation
Season 12 • Episode 18
Sheldon and Amy try to win over Nobel laureates Kip Thorne, George Smoot and Frances Arnold.
Sunday, April 12
The Inspiration Deprivation
Season 12 • Episode 19
Wolowitz buys a scooter that looks like the one he had years ago.
Sunday, April 12
The Decision Reverberation
Season 12 • Episode 20
Koothrappali publishes a paper that suggests he may have discovered alien life.
Sunday, April 12
The Plagiarism Schism
Season 12 • Episode 21
Kripke has proof that Dr. Pemberton plagiarized his thesis in college.
Sunday, April 12
The Maternal Conclusion
Season 12 • Episode 22
Leonard is pleasantly surprised when Beverly comes to visit, and she's genuinely kind to him.
Sunday, April 12
The Friendship Algorithm
Season 2 • Episode 13
Sheldon develops a scientific procedure for making friends; Kripke controls a new supercomputer.
Sunday, April 12
The Financial Permeability
Season 2 • Episode 14
Sheldon's solution to Penny's financial difficulty leads to a confrontation.
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