The Big Bang Theory

Sunday, April 27

The Dependence Transcendence

Season 10 • Episode 3

Sheldon tries an energy drink as the gang races to finish its government project on time.

Sunday, April 27

The Cohabitation Experimentation

Season 10 • Episode 4

After her apartment floods, Amy suggests that she and Sheldon move in together.

Sunday, April 27

The Hot Tub Contamination

Season 10 • Episode 5

Things do not run smoothly when Amy moves in with Sheldon, and Leonard and Penny have to intervene.

Sunday, April 27

The Fetal Kick Catalyst

Season 10 • Episode 6

At a Comic Con event, Penny learns there are fans of her performance in "Serial Ape-ist."

Sunday, April 27

The Veracity Elasticity

Season 10 • Episode 7

Amy lies about repairs being made to her apartment so she can continue living with Sheldon.

Sunday, April 27

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.

Sunday, April 27

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.

Sunday, April 27

The Collaboration Fluctuation

Season 10 • Episode 19

Leonard, Penny and Raj adjust to their new arrangement; Sheldon expresses interest in Amy's work.

Sunday, April 27

The Recollection Dissipation

Season 10 • Episode 20

Sheldon collaborates on too many projects; Bernadette nears the end of her maternity leave.

Sunday, April 27

The Separation Agitation

Season 10 • Episode 21

Howard and Bernadette struggle to leave Halley in day care; Bert introduces his new girlfriend.

Sunday, April 27

The Cognition Regeneration

Season 10 • Episode 22

Leonard has concerns when Penny considers accepting a job offer from Zack, her ex-boyfriend.

Sunday, April 27

The Gyroscopic Collapse

Season 10 • Episode 23

Leonard, Sheldon and Wolowitz get an unwelcome surprise after completing the Air Force project.

Sunday, April 27

The Long Distance Dissonance

Season 10 • Episode 24

Sheldon's former admirer, Dr. Ramona Nowitzki, resurfaces while Amy is away at Princeton.

Sunday, April 27

The Proposal Proposal

Season 11 • Episode 1

Amy answers Sheldon's marriage proposal; Howard and Bernadette struggle with unexpected news.

Sunday, April 27

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, April 27

The Relaxation Integration

Season 11 • Episode 3

As Sheldon stresses about picking a wedding date, Amy tells him he can be more easygoing.

Sunday, April 27

The Explosion Implosion

Season 11 • Episode 4

Wolowitz and Sheldon bond over having disappointing fathers; Leonard's mother befriends Penny.

Monday, April 28

The Brain Bowl Incubation

Season 10 • Episode 8

After a successful gene experiment, Sheldon is determined to convince Amy they should procreate.

Monday, April 28

The Geology Elevation

Season 10 • Episode 9

Sheldon gets jealous when a co-worker wins an award; Wolowitz finds an old invention.

Monday, April 28

The Emotion Detection Automation

Season 10 • Episode 14

Sheldon tests an MIT invention after hearing it can help him read people's emotions.

Monday, April 28

The Locomotion Reverberation

Season 10 • Episode 15

Leonard and Wolowitz try to distract Sheldon when he slows the progress of their guidance system.

Monday, April 28

The Birthday Synchronicity

Season 10 • Episode 11

Bernadette and Howard welcome their baby; Amy celebrates her birthday with Sheldon.

Monday, April 28

The Holiday Summation

Season 10 • Episode 12

Sheldon and Amy visit Penny and Leonard and tell them about their terrible trip to Texas.

Monday, April 28

The Fortification Implementation

Season 8 • Episode 20

Sheldon and Amy build a blanket fort; Wolowitz meets a half-brother he didn't know he had.

Monday, April 28

The Communication Deterioration

Season 8 • Episode 21

The guys fight over a message that could be used for alien contact.

Monday, April 28

The Graduation Transmission

Season 8 • Episode 22

Wolowitz questions his engineering skills; a canceled flight puts Leonard's plans in jeopardy.

Monday, April 28

The Maternal Combustion

Season 8 • Episode 23

When Sheldon's and Leonard's mothers finally meet, personalities collide.

Monday, April 28

The Commitment Determination

Season 8 • Episode 24

While facing relationship changes, Sheldon pushes Penny and Leonard to choose a wedding date.

Monday, April 28

The Matrimonial Momentum

Season 9 • Episode 1

Penny must decide if she can get past Leonard's bad behavior.

Monday, April 28

The Habitation Configuration

Season 6 • Episode 7

Sheldon is caught in the middle of Amy and Wil Wheaton's argument.

Monday, April 28

The 43 Peculiarity

Season 6 • Episode 8

Raj and Howard try to figure out why Sheldon disappears at 2:45 every afternoon.

Monday, April 28

The Parking Spot Escalation

Season 6 • Episode 9

Sheldon and Wolowitz's fight over a parking spot at the university impacts the whole gang.

Monday, April 28

The Fish Guts Displacement

Season 6 • Episode 10

When Amy gets sick, Sheldon tries to nurse her back to health.

Monday, April 28

The Santa Simulation

Season 6 • Episode 11

During a game, Sheldon revisits Christmas memories; finding a date for Koothrappali.

Monday, April 28

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.

Monday, April 28

The Bakersfield Expedition

Season 6 • Episode 13

The guys don costumes and go on a road trip to a comic book convention.

Monday, April 28

The Cooper/Kripke Inversion

Season 6 • Episode 14

Sheldon faces a crisis of confidence when he is forced to work with his nemesis, Barry Kripke.

Monday, April 28

The Spoiler Alert Segmentation

Season 6 • Episode 15

A fight between Sheldon and Leonard impacts Amy and Penny's living arrangements.

Monday, April 28

The Tangible Affection Proof

Season 6 • Episode 16

The guys search for Valentine's Day gifts; Stuart and Raj host a "lonely people" party.

Monday, April 28

The Monster Isolation

Season 6 • Episode 17

Koothrappali decides to never leave his apartment; Penny's acting skills impress Sheldon.

Monday, April 28

The Contractual Obligation Implementation

Season 6 • Episode 18

Leonard, Sheldon and Wolowitz talk to junior high girls about science-related careers.

Monday, April 28

The Monster Isolation

Season 6 • Episode 17

Koothrappali decides to never leave his apartment; Penny's acting skills impress Sheldon.

Monday, April 28

The Contractual Obligation Implementation

Season 6 • Episode 18

Leonard, Sheldon and Wolowitz talk to junior high girls about science-related careers.

Tuesday, April 29

The Romance Recalibration

Season 10 • Episode 13

Penny and Amy go on a spa weekend; Wolowitz and Koothrappali try to fix a squeaky floorboard.

Tuesday, April 29

The Emotion Detection Automation

Season 10 • Episode 14

Sheldon tests an MIT invention after hearing it can help him read people's emotions.

Tuesday, April 29

The Mommy Observation

Season 7 • Episode 18

Sheldon is faced with a new reality when he visits his mom in Houston.

Tuesday, April 29

The Allowance Evaporation

Season 10 • Episode 16

Sheldon and Amy have a fight; Koothrappali stops receiving financial support from his father.

Tuesday, April 29

The Monster Isolation

Season 6 • Episode 17

Koothrappali decides to never leave his apartment; Penny's acting skills impress Sheldon.

Tuesday, April 29

The Contractual Obligation Implementation

Season 6 • Episode 18

Leonard, Sheldon and Wolowitz talk to junior high girls about science-related careers.

Tuesday, April 29

The Closet Reconfiguration

Season 6 • Episode 19

Howard considers whether or not he should open a letter from his father.

Tuesday, April 29

The Tenure Turbulence

Season 6 • Episode 20

The girls get involved when Leonard, Sheldon and Raj compete for tenure at the University.

Tuesday, April 29

The Closure Alternative

Season 6 • Episode 21

Amy tries to help Sheldon get over his need for closure; Raj discovers a secret about Lucy.

Tuesday, April 29

The Proton Resurgence

Season 6 • Episode 22

Leonard and Sheldon hire the host of their favorite childhood TV show to perform.

Tuesday, April 29

The Gothowitz Deviation

Season 3 • Episode 3

Sheldon tries chocolate-based behavior modification on Penny; Howard and Raj hit a Goth nightclub.

Wednesday, April 30

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.

Wednesday, April 30

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.

Wednesday, April 30

The Indecision Amalgamation

Season 7 • Episode 19

Raj struggles with guilt when he dates two women at once; Penny has a chance to be in a movie.

Wednesday, April 30

The Recollection Dissipation

Season 10 • Episode 20

Sheldon collaborates on too many projects; Bernadette nears the end of her maternity leave.

Wednesday, April 30

The Separation Oscillation

Season 9 • Episode 2

Leonard tries to ease Penny's mind; Sheldon plans a special episode of "Fun With Flags."

Wednesday, April 30

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 30

The 2003 Approximation

Season 9 • Episode 4

An impending change inspires Sheldon to revert to 2003, before he met Penny and Leonard.

Wednesday, April 30

The Perspiration Implementation

Season 9 • Episode 5

Barry Kripke expresses interest in Amy while leading a fencing lesson for the guys.

Wednesday, April 30

The Helium Insufficiency

Season 9 • Episode 6

Leonard and Sheldon try to secure the helium they need during a nation-wide shortage.

Wednesday, April 30

The Spock Resonance

Season 9 • Episode 7

Sheldon struggles to keep his emotions in check when he is interviewed for a documentary.

Wednesday, April 30

The Mystery Date Observation

Season 9 • Episode 8

Sheldon, Wolowitz and Koothrappali post an ad online to find a new girlfriend for Sheldon.

Wednesday, April 30

The Platonic Permutation

Season 9 • Episode 9

Amy and Sheldon spend Thanksgiving at the aquarium -- as friends.

Wednesday, April 30

The Earworm Reverberation

Season 9 • Episode 10

Sheldon has a song stuck in his head; despite their awkward date, Amy asks Dave over for dinner.

Wednesday, April 30

The Opening Night Excitation

Season 9 • Episode 11

After dating for more than five years, Amy and Sheldon spend the night together for the first time.

Wednesday, April 30

The Workplace Proximity

Season 7 • Episode 5

Sheldon and Amy's relationship is tested when she takes a job at his university.

Wednesday, April 30

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.

Wednesday, April 30

The Holographic Excitation

Season 6 • Episode 5

The gang heads to Stuart's comic book store to celebrate Halloween.

Wednesday, April 30

The Extract Obliteration

Season 6 • Episode 6

A game threatens Sheldon's relationship with Stephen Hawking; Penny signs up for a college class.

Wednesday, April 30

The Habitation Configuration

Season 6 • Episode 7

Sheldon is caught in the middle of Amy and Wil Wheaton's argument.

Wednesday, April 30

The 43 Peculiarity

Season 6 • Episode 8

Raj and Howard try to figure out why Sheldon disappears at 2:45 every afternoon.

Thursday, May 1

The Separation Agitation

Season 10 • Episode 21

Howard and Bernadette struggle to leave Halley in day care; Bert introduces his new girlfriend.

Thursday, May 1

The Cognition Regeneration

Season 10 • Episode 22

Leonard has concerns when Penny considers accepting a job offer from Zack, her ex-boyfriend.

Thursday, May 1

The Relationship Diremption

Season 7 • Episode 20

Sheldon has a personal crisis when he decides string theory is a waste of his time.

Thursday, May 1

The Long Distance Dissonance

Season 10 • Episode 24

Sheldon's former admirer, Dr. Ramona Nowitzki, resurfaces while Amy is away at Princeton.

Thursday, May 1

The Proton Displacement

Season 7 • Episode 7

When Professor Proton asks Leonard for help with an experiment, Sheldon befriends Proton's rival.

Thursday, May 1

The Itchy Brain Simulation

Season 7 • Episode 8

When a mistake comes to light, Sheldon punishes Leonard; Penny decides to confront Raj's ex.

Thursday, May 1

The Thanksgiving Decoupling

Season 7 • Episode 9

When the gang decides to spend Thanksgiving at Mrs. Wolowitz's house, Sheldon protests.

Thursday, May 1

The Discovery Dissipation

Season 7 • Episode 10

Amy and Leonard try to help Sheldon deal with his shame; Raj stays with Bernadette and Howard.

Thursday, May 1

The Cooper Extraction

Season 7 • Episode 11

While Sheldon is in Texas, the rest of the gang realize how much he has changed their lives.

Thursday, May 1

The Friendship Turbulence

Season 7 • Episode 17

Bernadette tries to negotiate peace between Sheldon and Wolowitz.

Friday, May 2

The Proposal Proposal

Season 11 • Episode 1

Amy answers Sheldon's marriage proposal; Howard and Bernadette struggle with unexpected news.

Friday, May 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.

Friday, May 2

The Anything Can Happen Recurrence

Season 7 • Episode 21

Sheldon gives spontaneity a try; Raj asks Howard for help with preparation for a date with Emily.

Friday, May 2

The Explosion Implosion

Season 11 • Episode 4

Wolowitz and Sheldon bond over having disappointing fathers; Leonard's mother befriends Penny.

Friday, May 2

The Hesitation Ramification

Season 7 • Episode 12

Penny asks Leonard a bold question about their relationship; Sheldon wants to learn how to be funny.

Friday, May 2

The Occupation Recalibration

Season 7 • Episode 13

Sheldon must learn how to relax when he is forced to take a vacation.

Friday, May 2

The Convention Conundrum

Season 7 • Episode 14

Unable to get Comic-Con tickets, Sheldon tries to hold his own convention.

Friday, May 2

The Locomotive Manipulation

Season 7 • Episode 15

Sheldon and Amy go on a trip to wine country with Howard and Bernadette.

Friday, May 2

The Table Polarization

Season 7 • Episode 16

When Leonard buys a dining room table, Sheldon re-evaluates the changes in his life.

Friday, May 2

The Mommy Observation

Season 7 • Episode 18

Sheldon is faced with a new reality when he visits his mom in Houston.

Friday, May 2

The Indecision Amalgamation

Season 7 • Episode 19

Raj struggles with guilt when he dates two women at once; Penny has a chance to be in a movie.

Friday, May 2

The Cornhusker Vortex

Season 3 • Episode 6

Sheldon teaches Leonard about football; kite-fighting threatens Howard and Raj's friendship.

Saturday, May 3

The Collaboration Contamination

Season 11 • Episode 5

Penny and Leonard learn a secret from an unlikely source about dealing with Sheldon.

Saturday, May 3

The Proton Regeneration

Season 11 • Episode 6

Sheldon auditions for the role of the new Professor Proton; Penny takes care of Halley.

Saturday, May 3

The Proton Transmogrification

Season 7 • Episode 22

Professor Proton helps Sheldon deal with grief; Leonard gets into a competition with Penny.

Saturday, May 3

The Tesla Recoil

Season 11 • Episode 8

Leonard and Wolowitz are furious to learn Sheldon worked with the military behind their backs.

Saturday, May 3

The Collaboration Contamination

Season 11 • Episode 5

Penny and Leonard learn a secret from an unlikely source about dealing with Sheldon.

Saturday, May 3

The Proton Regeneration

Season 11 • Episode 6

Sheldon auditions for the role of the new Professor Proton; Penny takes care of Halley.

Saturday, May 3

The Geology Methodology

Season 11 • Episode 7

Sheldon tries to keep his collaboration with Bert a secret; Penny and Bernadette coach Koothrappali.

Saturday, May 3

The Tesla Recoil

Season 11 • Episode 8

Leonard and Wolowitz are furious to learn Sheldon worked with the military behind their backs.

Saturday, May 3

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, May 3

The Confidence Erosion

Season 11 • Episode 10

Sheldon and Amy try to use math to eliminate wedding planning stress.

Saturday, May 3

The Celebration Reverberation

Season 11 • Episode 11

Sheldon plans a dinner for Amy's birthday; Leonard receives a Christmas letter from his brother.

Saturday, May 3

The Matrimonial Metric

Season 11 • Episode 12

Sheldon and Amy subject their friends to experiments; Penny reveals her feelings about Amy.

Saturday, May 3

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, May 3

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, May 3

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, May 3

The Neonatal Nomenclature

Season 11 • Episode 16

When Bernadette won't go into labor, her friends try different tactics to get things started.

Saturday, May 3

The Proton Transmogrification

Season 7 • Episode 22

Professor Proton helps Sheldon deal with grief; Leonard gets into a competition with Penny.

Saturday, May 3

The Gorilla Dissolution

Season 7 • Episode 23

A bad day compels Penny to re-evaluate her choices -- including Leonard.

Sunday, May 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.

Sunday, May 4

The Confidence Erosion

Season 11 • Episode 10

Sheldon and Amy try to use math to eliminate wedding planning stress.

Sunday, May 4

The Celebration Reverberation

Season 11 • Episode 11

Sheldon plans a dinner for Amy's birthday; Leonard receives a Christmas letter from his brother.

Sunday, May 4

The Matrimonial Metric

Season 11 • Episode 12

Sheldon and Amy subject their friends to experiments; Penny reveals her feelings about Amy.

Sunday, May 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.

Sunday, May 4

The Athenaeum Allocation

Season 11 • Episode 17

Leonard jumps through hoops to help secure the perfect wedding venue for Sheldon and Amy.

Sunday, May 4

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, May 4

The Tenant Disassociation

Season 11 • Episode 19

Leonard decides to run against Sheldon for president of the tenants association.

Sunday, May 4

The Reclusive Potential

Season 11 • Episode 20

A brilliant but reclusive scientist invites Sheldon to his cabin in the middle of nowhere.

Sunday, May 4

The Comet Polarization

Season 11 • Episode 21

Friendships are threatened when Koothrappali takes credit for Penny's astronomical discovery.

Sunday, May 4

The Monetary Insufficiency

Season 11 • Episode 22

Sheldon tries to win money for science; Penny and Bernadette take Amy wedding dress shopping.

Sunday, May 4

The Sibling Realignment

Season 11 • Episode 23

Sheldon's mother won't attend his wedding unless he invites his brother.

Sunday, May 4

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, May 4

The Conjugal Configuration

Season 12 • Episode 1

Penny and Leonard discover they are uncomfortably similar to Amy's parents.

Sunday, May 4

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, May 4

The Procreation Calculation

Season 12 • Episode 3

Stuart starts bringing his new girlfriend home; Koothrappali explores an arranged marriage.

Sunday, May 4

The Tam Turbulence

Season 12 • Episode 4

Sheldon won't tell anyone why he's never mentioned Tam, his childhood best friend.

Monday, May 5

The Separation Triangulation

Season 11 • Episode 14

Koothrappali learns the woman he's dating has a very upset husband; Sheldon rents his old room.

Monday, May 5

The Novelization Correlation

Season 11 • Episode 15

Sheldon petitions Wil Wheaton to appear on his show, but Wil offers a role to Amy instead.

Monday, May 5

The Allowance Evaporation

Season 10 • Episode 16

Sheldon and Amy have a fight; Koothrappali stops receiving financial support from his father.

Monday, May 5

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.

Monday, May 5

The Athenaeum Allocation

Season 11 • Episode 17

Leonard jumps through hoops to help secure the perfect wedding venue for Sheldon and Amy.

Monday, May 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.

Monday, May 5

The Sales Call Sublimination

Season 9 • Episode 12

Leonard meets with a psychiatrist; Wolowitz and Bernadette struggle when Stuart moves out.

Monday, May 5

The Empathy Optimization

Season 9 • Episode 13

Leonard, Penny and the gang attempt to treat themselves to a Sheldon-free weekend.

Monday, May 5

The Meemaw Materialization

Season 9 • Episode 14

Sheldon's excitement about his Meemaw's visit fades when she butts heads with Amy.

Monday, May 5

The Valentino Submergence

Season 9 • Episode 15

Amy and Sheldon host a Valentine's Day edition of Fun With Flags; Raj is torn between two women.

Monday, May 5

The Positive Negative Reaction

Season 9 • Episode 16

The gang celebrates news of Bernadette's pregnancy by singing karaoke.

Monday, May 5

The Celebration Experimentation

Season 9 • Episode 17

For the first time in nine years, the gang celebrates Sheldon's birthday.

Monday, May 5

The Lizard-Spock Expansion

Season 2 • Episode 8

Leonard inadvertently steals away the new woman Wolowitz thinks is the love of his life.

Monday, May 5

The Vegas Renormalization

Season 2 • Episode 21

Koothrappali and Leonard take Wolowitz to Las Vegas; Sheldon gets locked out of his apartment.

Monday, May 5

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.

Monday, May 5

The Excelsior Acquisition

Season 3 • Episode 16

Sheldon ends up in traffic court after getting a ticket because of Penny.

Monday, May 5

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, May 5

The Guitarist Amplification

Season 3 • Episode 7

Sheldon tries to make peace when Leonard and Penny get into an argument.

Monday, May 5

The Holographic Excitation

Season 6 • Episode 5

The gang heads to Stuart's comic book store to celebrate Halloween.

Monday, May 5

The Convention Conundrum

Season 7 • Episode 14

Unable to get Comic-Con tickets, Sheldon tries to hold his own convention.

Monday, May 5

The Proton Transmogrification

Season 7 • Episode 22

Professor Proton helps Sheldon deal with grief; Leonard gets into a competition with Penny.

Monday, May 5

The Opening Night Excitation

Season 9 • Episode 11

After dating for more than five years, Amy and Sheldon spend the night together for the first time.

Monday, May 5

The Locomotion Interruption

Season 8 • Episode 1

Leonard and Amy make an unexpected trip to Arizona to fetch Sheldon; Penny goes for an interview.

Monday, May 5

The Junior Professor Solution

Season 8 • Episode 2

Amy takes advantage of the tension between Penny and Bernadette.

Tuesday, May 6

The Tenant Disassociation

Season 11 • Episode 19

Leonard decides to run against Sheldon for president of the tenants association.

Tuesday, May 6

The Reclusive Potential

Season 11 • Episode 20

A brilliant but reclusive scientist invites Sheldon to his cabin in the middle of nowhere.

Tuesday, May 6

The Gorilla Dissolution

Season 7 • Episode 23

A bad day compels Penny to re-evaluate her choices -- including Leonard.

Tuesday, May 6

The Monetary Insufficiency

Season 11 • Episode 22

Sheldon tries to win money for science; Penny and Bernadette take Amy wedding dress shopping.

Tuesday, May 6

The Junior Professor Solution

Season 8 • Episode 2

Amy takes advantage of the tension between Penny and Bernadette.

Tuesday, May 6

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.

Tuesday, May 6

The Hook-Up Reverberation

Season 8 • Episode 4

Raj's honesty comes back to haunt him when his new girlfriend is unfriendly to Penny.

Tuesday, May 6

The Focus Attenuation

Season 8 • Episode 5

During their weekend in Las Vegas, Bernadette and Amy accuse Penny of being a buzz kill.

Tuesday, May 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.

Tuesday, May 6

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.

Wednesday, May 7

The Sibling Realignment

Season 11 • Episode 23

Sheldon's mother won't attend his wedding unless he invites his brother.

Wednesday, May 7

The Bow Tie Asymmetry

Season 11 • Episode 24

Amy's parents and Sheldon's family arrive; nearly everybody is focused on the wedding plans.

Wednesday, May 7

The Status Quo Combustion

Season 7 • Episode 24

Faced with an uncertain future, Sheldon considers a major change.

Wednesday, May 7

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.

Wednesday, May 7

The Application Deterioration

Season 9 • Episode 18

The guys file for a patent on their invention; the girls give dating advice to Koothrappali.

Wednesday, May 7

The Solder Excursion Diversion

Season 9 • Episode 19

Sheldon makes a revelation when Amy buys him a new laptop; Leonard and Wolowitz lie to their wives.

Wednesday, May 7

The Big Bear Precipitation

Season 9 • Episode 20

Sheldon shares a secret about Leonard when they go on a weekend trip with Penny and Amy.

Wednesday, May 7

The Viewing Party Combustion

Season 9 • Episode 21

The gang must choose sides when an argument between Sheldon and Leonard turns into a heated debate.

Wednesday, May 7

The Fermentation Bifurcation

Season 9 • Episode 22

The gang runs into Penny's ex while out at a wine bar; Bernadette spends an evening with Sheldon.

Wednesday, May 7

The Line Substitution Solution

Season 9 • Episode 23

Sheldon wants to go to a movie screening, so he pays Stuart to spend the day with Amy.

Wednesday, May 7

The Convergence Convergence

Season 9 • Episode 24

Leonard's recently divorced parents and Sheldon's devoutly religious mother visit.

Wednesday, May 7

The Conjugal Conjecture

Season 10 • Episode 1

The group deals with the aftermath of Sheldon's mother and Leonard's father's evening together.

Wednesday, May 7

The Military Miniaturization

Season 10 • Episode 2

Wolowitz has a meeting with Colonel Williams, a representative from the Air Force.

Wednesday, May 7

The Dependence Transcendence

Season 10 • Episode 3

Sheldon tries an energy drink as the gang races to finish its government project on time.

Wednesday, May 7

The Anxiety Optimization

Season 8 • Episode 13

Sheldon asks his friends to challenge him in hope of achieving a scientific breakthrough.

Wednesday, May 7

The Vengeance Formulation

Season 3 • Episode 9

After being humiliated on the radio, Sheldon vows to destroy Kripke.

Thursday, May 8

The Procreation Calculation

Season 12 • Episode 3

Stuart starts bringing his new girlfriend home; Koothrappali explores an arranged marriage.

Thursday, May 8

The Tam Turbulence

Season 12 • Episode 4

Sheldon won't tell anyone why he's never mentioned Tam, his childhood best friend.

Thursday, May 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.

Thursday, May 8

The Grant Allocation Derivation

Season 12 • Episode 7

Leonard struggles when he's given the responsibility of distributing extra grant money.

Thursday, May 8

The Comic Book Store Regeneration

Season 8 • Episode 15

The gang waits for the reopening of the comic book store; Wolowitz gets some shocking news.

Thursday, May 8

The Intimacy Acceleration

Season 8 • Episode 16

Penny and Sheldon design an experiment -- as a joke -- to make participants fall in love.

Thursday, May 8

The Colonization Application

Season 8 • Episode 17

Amy finds out that Sheldon applied for a one-way mission to colonize Mars.

Thursday, May 8

The Leftover Thermalization

Season 8 • Episode 18

A magazine article only credits Sheldon in an article about a paper he co-wrote with Leonard.

Thursday, May 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.

Thursday, May 8

The Fortification Implementation

Season 8 • Episode 20

Sheldon and Amy build a blanket fort; Wolowitz meets a half-brother he didn't know he had.

Thursday, May 8

The Communication Deterioration

Season 8 • Episode 21

The guys fight over a message that could be used for alien contact.

Thursday, May 8

The Gorilla Experiment

Season 3 • Episode 10

Sheldon tries to help Penny understand Leonard's work; Wolowitz gets jealous.

Friday, May 9

The Consummation Deviation

Season 12 • Episode 8

Sheldon tries to bond with Amy's father; Wolowitz lures Mr. Fowler away with magic tricks.

Friday, May 9

The Citation Negation

Season 12 • Episode 9

Sheldon and Amy are devastated after learning that Super Asymmetry has already been disproved.

Friday, May 9

The Junior Professor Solution

Season 8 • Episode 2

Amy takes advantage of the tension between Penny and Bernadette.

Friday, May 9

The Paintball Scattering

Season 12 • Episode 11

Penny and Leonard organize a paintball game, which results in mayhem due to Sheldon's jealousy.

Friday, May 9

The Maternal Combustion

Season 8 • Episode 23

When Sheldon's and Leonard's mothers finally meet, personalities collide.

Friday, May 9

The Commitment Determination

Season 8 • Episode 24

While facing relationship changes, Sheldon pushes Penny and Leonard to choose a wedding date.

Friday, May 9

The Matrimonial Momentum

Season 9 • Episode 1

Penny must decide if she can get past Leonard's bad behavior.

Friday, May 9

The Separation Oscillation

Season 9 • Episode 2

Leonard tries to ease Penny's mind; Sheldon plans a special episode of "Fun With Flags."

Friday, May 9

The Bachelor Party Corrosion

Season 9 • Episode 3

A flat tire during Leonard's bachelor party weekend in Mexico tests the guys' skills.

Friday, May 9

The 2003 Approximation

Season 9 • Episode 4

An impending change inspires Sheldon to revert to 2003, before he met Penny and Leonard.

Friday, May 9

The Perspiration Implementation

Season 9 • Episode 5

Barry Kripke expresses interest in Amy while leading a fencing lesson for the guys.

Friday, May 9

The Psychic Vortex

Season 3 • Episode 12

Sheldon and Koothrappali attend a mixer; Leonard discovers that Penny believes in psychics.

Saturday, May 10

The Propagation Proposition

Season 12 • Episode 12

Penny's ex-boyfriend Zack learns that he is infertile, so he asks Leonard for help.

Saturday, May 10

The Confirmation Polarization

Season 12 • Episode 13

A rival team of physicists tries to take credit for Amy and Sheldon's super asymmetry theory.

Saturday, May 10

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.

Saturday, May 10

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.

Saturday, May 10

A free-spirited beauty moves in next door to two physicists.

Saturday, May 10

A free-spirited beauty moves in next door to two physicists.

Saturday, May 10

A free-spirited beauty moves in next door to two physicists.

Saturday, May 10

A free-spirited beauty moves in next door to two physicists.

Saturday, May 10

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, May 10

The Collaboration Fluctuation

Season 10 • Episode 19

Leonard, Penny and Raj adjust to their new arrangement; Sheldon expresses interest in Amy's work.

Saturday, May 10

A free-spirited beauty moves in next door to two physicists.

Saturday, May 10

A free-spirited beauty moves in next door to two physicists.

Saturday, May 10

A free-spirited beauty moves in next door to two physicists.

Saturday, May 10

A free-spirited beauty moves in next door to two physicists.

Saturday, May 10

A free-spirited beauty moves in next door to two physicists.

Saturday, May 10

A free-spirited beauty moves in next door to two physicists.

Saturday, May 10

The Platonic Permutation

Season 9 • Episode 9

Amy and Sheldon spend Thanksgiving at the aquarium -- as friends.

Saturday, May 10

The Mommy Observation

Season 7 • Episode 18

Sheldon is faced with a new reality when he visits his mom in Houston.

Saturday, May 10

The Opening Night Excitation

Season 9 • Episode 11

After dating for more than five years, Amy and Sheldon spend the night together for the first time.

Saturday, May 10

The Sales Call Sublimination

Season 9 • Episode 12

Leonard meets with a psychiatrist; Wolowitz and Bernadette struggle when Stuart moves out.

Saturday, May 10

The Empathy Optimization

Season 9 • Episode 13

Leonard, Penny and the gang attempt to treat themselves to a Sheldon-free weekend.

Saturday, May 10

The Meemaw Materialization

Season 9 • Episode 14

Sheldon's excitement about his Meemaw's visit fades when she butts heads with Amy.

Saturday, May 10

The Valentino Submergence

Season 9 • Episode 15

Amy and Sheldon host a Valentine's Day edition of Fun With Flags; Raj is torn between two women.

Saturday, May 10

The Positive Negative Reaction

Season 9 • Episode 16

The gang celebrates news of Bernadette's pregnancy by singing karaoke.

Saturday, May 10

The Maternal Congruence

Season 3 • Episode 11

Leonard is horrified when his mother (Christine Baranski) visits.

Saturday, May 10

The Rhinitis Revelation

Season 5 • Episode 6

Sheldon finds himself competing with the gang for his mother's attention when she visits.

Sunday, May 11

The Mommy Observation

Season 7 • Episode 18

Sheldon is faced with a new reality when he visits his mom in Houston.

Sunday, May 11

The Maternal Combustion

Season 8 • Episode 23

When Sheldon's and Leonard's mothers finally meet, personalities collide.

Sunday, May 11

The Convergence Convergence

Season 9 • Episode 24

Leonard's recently divorced parents and Sheldon's devoutly religious mother visit.

Sunday, May 11

The Birthday Synchronicity

Season 10 • Episode 11

Bernadette and Howard welcome their baby; Amy celebrates her birthday with Sheldon.

Sunday, May 11

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, May 11

The Maternal Conclusion

Season 12 • Episode 22

Leonard is pleasantly surprised when Beverly comes to visit and she's genuinely kind to him.

Sunday, May 11

A free-spirited beauty moves in next door to two physicists.

Sunday, May 11

A free-spirited beauty moves in next door to two physicists.

Sunday, May 11

A free-spirited beauty moves in next door to two physicists.

Sunday, May 11

A free-spirited beauty moves in next door to two physicists.

Sunday, May 11

A free-spirited beauty moves in next door to two physicists.

Sunday, May 11

A free-spirited beauty moves in next door to two physicists.

Sunday, May 11

A free-spirited beauty moves in next door to two physicists.

Sunday, May 11

A free-spirited beauty moves in next door to two physicists.

Sunday, May 11

A free-spirited beauty moves in next door to two physicists.

Sunday, May 11

A free-spirited beauty moves in next door to two physicists.

Sunday, May 11

A free-spirited beauty moves in next door to two physicists.

Sunday, May 11

A free-spirited beauty moves in next door to two physicists.

Monday, May 12

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.

Monday, May 12

The Collaboration Fluctuation

Season 10 • Episode 19

Leonard, Penny and Raj adjust to their new arrangement; Sheldon expresses interest in Amy's work.

Monday, May 12

A free-spirited beauty moves in next door to two physicists.

Monday, May 12

A free-spirited beauty moves in next door to two physicists.

Monday, May 12

A free-spirited beauty moves in next door to two physicists.

Monday, May 12

A free-spirited beauty moves in next door to two physicists.

Monday, May 12

A free-spirited beauty moves in next door to two physicists.

Monday, May 12

A free-spirited beauty moves in next door to two physicists.

Monday, May 12

The Solder Excursion Diversion

Season 9 • Episode 19

Sheldon makes a revelation when Amy buys him a new laptop; Leonard and Wolowitz lie to their wives.

Monday, May 12

The Big Bear Precipitation

Season 9 • Episode 20

Sheldon shares a secret about Leonard when they go on a weekend trip with Penny and Amy.

Monday, May 12

The Viewing Party Combustion

Season 9 • Episode 21

The gang must choose sides when an argument between Sheldon and Leonard turns into a heated debate.

Monday, May 12

The Fermentation Bifurcation

Season 9 • Episode 22

The gang runs into Penny's ex while out at a wine bar; Bernadette spends an evening with Sheldon.

Monday, May 12

The Line Substitution Solution

Season 9 • Episode 23

Sheldon wants to go to a movie screening, so he pays Stuart to spend the day with Amy.

Monday, May 12

The Bozeman Reaction

Season 3 • Episode 13

Leonard and Sheldon turn to their friends to create a state-of-the-art security system.

Monday, May 12

The Conjugal Conjecture

Season 10 • Episode 1

The group deals with the aftermath of Sheldon's mother and Leonard's father's evening together.

Monday, May 12

The Military Miniaturization

Season 10 • Episode 2

Wolowitz has a meeting with Colonel Williams, a representative from the Air Force.

Monday, May 12

The Dependence Transcendence

Season 10 • Episode 3

Sheldon tries an energy drink as the gang races to finish its government project on time.

Monday, May 12

The Cohabitation Experimentation

Season 10 • Episode 4

After her apartment floods, Amy suggests that she and Sheldon move in together.

Monday, May 12

The Hot Tub Contamination

Season 10 • Episode 5

Things do not run smoothly when Amy moves in with Sheldon, and Leonard and Penny have to intervene.

Monday, May 12

The Fetal Kick Catalyst

Season 10 • Episode 6

At a Comic Con event, Penny learns there are fans of her performance in "Serial Ape-ist."

Tuesday, May 13

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, May 13

The Conference Valuation

Season 12 • Episode 17

When Penny and Bernadette go to a convention, Wolowitz is left in charge of the kids.

Tuesday, May 13

The Hook-Up Reverberation

Season 8 • Episode 4

Raj's honesty comes back to haunt him when his new girlfriend is unfriendly to Penny.

Tuesday, May 13

The Inspiration Deprivation

Season 12 • Episode 19

Wolowitz buys a scooter that looks like the one he had years ago.

Tuesday, May 13

The Hot Tub Contamination

Season 10 • Episode 5

Things do not run smoothly when Amy moves in with Sheldon, and Leonard and Penny have to intervene.

Tuesday, May 13

The Fetal Kick Catalyst

Season 10 • Episode 6

At a Comic Con event, Penny learns there are fans of her performance in "Serial Ape-ist."

Tuesday, May 13

The Veracity Elasticity

Season 10 • Episode 7

Amy lies about repairs being made to her apartment so she can continue living with Sheldon.

Tuesday, May 13

The Brain Bowl Incubation

Season 10 • Episode 8

After a successful gene experiment, Sheldon is determined to convince Amy they should procreate.

Tuesday, May 13

The Einstein Approximation

Season 3 • Episode 14

Sheldon tries to figure out the answer to a physics problem by working with Penny.