The Big Bang Theory

The Big Bang Theory - CBS

CBS

Series

2007

TVPG

Sitcom

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

Where to Stream

2007–2019 Series 12 Seasons290 Episodes

Upcoming TV Airings

The airings below are based on a generic national schedule. Times and dates can vary by TV provider.

Monday, March 18

The Roommate Transmogrification

Season 4 • Episode 24

Bernadette gets her Ph.D., inspiring the guys to tease Wolowitz about his lack of a doctorate.

Monday, March 18

The Skank Reflex Analysis

Season 5 • Episode 1

Penny worries that she has ruined her relationship with her friends.

Tuesday, March 19

The White Asparagus Triangulation

Season 2 • Episode 9

Sheldon is thrilled when Leonard starts dating a woman who meets Sheldon's stringent standards.

Tuesday, March 19

The Infestation Hypothesis

Season 5 • Episode 2

Amy is caught in the middle when Penny and Sheldon argue over a pre-owned chair.

Tuesday, March 19

The Pulled Groin Extrapolation

Season 5 • Episode 3

Bernadette, Howard and Mrs. Wolowitz spend the weekend together.

Tuesday, March 19

The Wiggly Finger Catalyst

Season 5 • Episode 4

Raj wants a girlfriend, so Penny introduces him to a woman he can communicate with.

Tuesday, March 19

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 19

The Rhinitis Revelation

Season 5 • Episode 6

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

Tuesday, March 19

The Good Guy Fluctuation

Season 5 • Episode 7

An attractive comic book artist tests Leonard and Priya's relationship.

Tuesday, March 19

The Isolation Permutation

Season 5 • Episode 8

Amy is devastated when Penny and Bernadette shop for wedding dresses without her.

Tuesday, March 19

The Deception Verification

Season 7 • Episode 2

Leonard and Sheldon's friendship is tested; Wolowitz's masculinity is threatened.

Tuesday, March 19

The Flaming Spittoon Acquisition

Season 5 • Episode 10

Sheldon is jealous when Stuart, from the comic book store, asks Amy out on a date.

Tuesday, March 19

The Speckerman Recurrence

Season 5 • Episode 11

Leonard must face the bully who targeted him in high school; Penny confronts her past actions.

Tuesday, March 19

The Shiny Trinket Maneuver

Season 5 • Episode 12

Amy is upset with Sheldon when he isn't impressed with her recent accomplishment.

Tuesday, March 19

The Recombination Hypothesis

Season 5 • Episode 13

Everything could change when Leonard spontaneously invites Penny to a romantic dinner.

Tuesday, March 19

The Beta Test Initiation

Season 5 • Episode 14

Penny and Leonard experiment with their new relationship; Raj forms an unusual bond.

Tuesday, March 19

The Friendship Contraction

Season 5 • Episode 15

Leonard starts to reconsider his friendship with Sheldon; Wolowitz tries to choose a nickname.

Wednesday, March 20

The Vartabedian Conundrum

Season 2 • Episode 10

Leonard asks Penny for advice when his new relationship starts moving too fast.

Wednesday, March 20

The Vacation Solution

Season 5 • Episode 16

Sheldon goes to work with Amy in her lab when the university forces him to take a vacation.

Wednesday, March 20

The Rothman Disintegration

Season 5 • Episode 17

Sheldon and Kripke compete for a corner office; Penny receives a gift from Amy.

Wednesday, March 20

The Werewolf Transformation

Season 5 • Episode 18

Sheldon's routine is turned upside down when his barber gets sick.

Wednesday, March 20

The Weekend Vortex

Season 5 • Episode 19

Sheldon decides to play video games with the guys instead of attending a party with Amy.

Wednesday, March 20

The Transporter Malfunction

Season 5 • Episode 20

After receiving new "Star Trek" collectibles, Sheldon finds himself haunted by Mr. Spock.

Wednesday, March 20

The Hawking Excitation

Season 5 • Episode 21

When Wolowitz works with Stephen Hawking, Sheldon is determined to meet the famous scientist.

Wednesday, March 20

The Stag Convergence

Season 5 • Episode 22

Knowledge of Howard's sexual history makes Bernadette reconsider their future together.

Wednesday, March 20

The Raiders Minimization

Season 7 • Episode 4

Sheldon wants revenge after Amy ruins one of his favorite films.

Thursday, March 21

The Killer Robot Instability

Season 2 • Episode 12

The guys lose their most important teammate in an upcoming fighting-robot competition.

Thursday, March 21

The Workplace Proximity

Season 7 • Episode 5

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

Friday, March 22

The Friendship Algorithm

Season 2 • Episode 13

Sheldon develops a scientific procedure for making friends; Kripke controls a new supercomputer.

Friday, March 22

The Romance Resonance

Season 7 • Episode 6

Sheldon's latest scientific breakthrough leaves him feeling like a fraud.

Saturday, March 23

The Financial Permeability

Season 2 • Episode 14

Sheldon's solution to Penny's financial difficulty leads to a confrontation.

Saturday, March 23

The Countdown Reflection

Season 5 • Episode 24

The gang tries to help Wolowitz and Bernadette get married before the space launch.

Saturday, March 23

The Date Night Variable

Season 6 • Episode 1

Raj faces his loneliness; Wolowitz gets drawn into a fight between Bernadette and his mom.

Saturday, March 23

The Decoupling Fluctuation

Season 6 • Episode 2

Sheldon tries to intervene when he learns that Penny is thinking about breaking up with Leonard.

Saturday, March 23

The Higgs Boson Observation

Season 6 • Episode 3

Amy feels threatened by Sheldon's new assistant; space starts to wear on Wolowitz.

Saturday, March 23

The Re-Entry Minimization

Season 6 • Episode 4

Wolowitz's return from space isn't all he expected; game night becomes a gender war.

Saturday, March 23

The Holographic Excitation

Season 6 • Episode 5

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

Saturday, March 23

The Extract Obliteration

Season 6 • Episode 6

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

Saturday, March 23

The Closure Alternative

Season 6 • Episode 21

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

Sunday, March 24

The Benefactor Factor

Season 4 • Episode 15

A wealthy donor makes Leonard question what he is willing to do for science.

Sunday, March 24

The Habitation Configuration

Season 6 • Episode 7

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

Sunday, March 24

The 43 Peculiarity

Season 6 • Episode 8

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

Sunday, March 24

The Parking Spot Escalation

Season 6 • Episode 9

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

Sunday, March 24

The Fish Guts Displacement

Season 6 • Episode 10

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

Sunday, March 24

The Santa Simulation

Season 6 • Episode 11

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

Sunday, March 24

The Egg Salad Equivalency

Season 6 • Episode 12

Sheldon is accused of sexual harassment and winds up getting Raj, Leonard and Wolowitz in trouble.

Monday, March 25

The Cohabitation Formulation

Season 4 • Episode 16

Wolowitz considers taking things with Bernadette to the next level.

Monday, March 25

The Bakersfield Expedition

Season 6 • Episode 13

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

Monday, March 25

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, March 25

The Spoiler Alert Segmentation

Season 6 • Episode 15

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

Monday, March 25

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, March 25

The Monster Isolation

Season 6 • Episode 17

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

Monday, March 25

The Contractual Obligation Implementation

Season 6 • Episode 18

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

Monday, March 25

The Closet Reconfiguration

Season 6 • Episode 19

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

Monday, March 25

The Proton Displacement

Season 7 • Episode 7

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

Monday, March 25

The Closure Alternative

Season 6 • Episode 21

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

Monday, March 25

The Proton Resurgence

Season 6 • Episode 22

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

Tuesday, March 26

The Maternal Capacitance

Season 2 • Episode 15

Leonard and Penny are drawn together after a disastrous visit from Leonard's mother.

Tuesday, March 26

The Love Spell Potential

Season 6 • Episode 23

Amy and Sheldon's relationship takes a surprising turn during a game of "Dungeons & Dragons."

Tuesday, March 26

The Bon Voyage Reaction

Season 6 • Episode 24

When Leonard receives an opportunity to work overseas, Penny and Sheldon are thrown for a loop.

Tuesday, March 26

The Hofstadter Insufficiency

Season 7 • Episode 1

Sheldon and Penny share secrets while Leonard is away; Wolowitz helps Raj get over his ex.

Tuesday, March 26

The Deception Verification

Season 7 • Episode 2

Leonard and Sheldon's friendship is tested; Wolowitz's masculinity is threatened.

Tuesday, March 26

The Scavenger Vortex

Season 7 • Episode 3

Raj designs a scavenger hunt that brings out the best -- and the worst -- in the whole gang.

Tuesday, March 26

The Raiders Minimization

Season 7 • Episode 4

Sheldon wants revenge after Amy ruins one of his favorite films.

Tuesday, March 26

The Workplace Proximity

Season 7 • Episode 5

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

Tuesday, March 26

The Itchy Brain Simulation

Season 7 • Episode 8

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

Tuesday, March 26

The Proton Displacement

Season 7 • Episode 7

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

Tuesday, March 26

The Itchy Brain Simulation

Season 7 • Episode 8

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

Tuesday, March 26

The Thanksgiving Decoupling

Season 7 • Episode 9

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

Tuesday, March 26

The Discovery Dissipation

Season 7 • Episode 10

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

Tuesday, March 26

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.

Tuesday, March 26

The Hesitation Ramification

Season 7 • Episode 12

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

Wednesday, March 27

The Cushion Saturation

Season 2 • Episode 16

A paintball game leads to a fight between Sheldon and Penny, and romance for Leslie and Wolowitz.

Wednesday, March 27

The Occupation Recalibration

Season 7 • Episode 13

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

Wednesday, March 27

The Convention Conundrum

Season 7 • Episode 14

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

Wednesday, March 27

The Locomotive Manipulation

Season 7 • Episode 15

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

Wednesday, March 27

The Table Polarization

Season 7 • Episode 16

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

Wednesday, March 27

The Friendship Turbulence

Season 7 • Episode 17

Bernadette tries to negotiate peace between Sheldon and Wolowitz.

Wednesday, March 27

The Mommy Observation

Season 7 • Episode 18

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

Wednesday, March 27

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, March 27

The Relationship Diremption

Season 7 • Episode 20

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

Thursday, March 28

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, March 28

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.

Thursday, March 28

The Proton Transmogrification

Season 7 • Episode 22

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

Thursday, March 28

The Gorilla Dissolution

Season 7 • Episode 23

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

Thursday, March 28

The Status Quo Combustion

Season 7 • Episode 24

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

Thursday, March 28

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, March 28

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, March 29

The Work Song Nanocluster

Season 2 • Episode 18

Penny's home business turns into a complete nightmare when Sheldon takes over.

Friday, March 29

The Junior Professor Solution

Season 8 • Episode 2

Amy takes advantage of the tension between Penny and Bernadette.

Friday, March 29

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.

Friday, March 29

The Hook-Up Reverberation

Season 8 • Episode 4

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

Friday, March 29

The Focus Attenuation

Season 8 • Episode 5

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

Friday, March 29

The Expedition Approximation

Season 8 • Episode 6

Raj and Sheldon try to simulate a dark-matter research expedition; Penny and Leonard have a fight.

Friday, March 29

The Occupation Recalibration

Season 7 • Episode 13

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

Saturday, March 30

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.

Saturday, March 30

The Misinterpretation Agitation

Season 8 • Episode 7

The guys try to help when Penny is faced with an awkward dilemma at work.

Saturday, March 30

The Prom Equivalency

Season 8 • Episode 8

Sheldon feels pressured to participate in traditions when the gang re-creates a high-school prom.

Saturday, March 30

The Septum Deviation

Season 8 • Episode 9

Leonard has minor surgery on his nose, causing Sheldon to overreact.

Saturday, March 30

The Champagne Reflection

Season 8 • Episode 10

Howard, Leonard and Raj look through their dead professor's research.

Saturday, March 30

The Clean Room Infiltration

Season 8 • Episode 11

Leonard and Wolowitz clash over a work emergency; Sheldon resents having to celebrate the holidays.

Sunday, March 31

The Toast Derivation

Season 4 • Episode 17

Sheldon is upset when he realizes Leonard is the center of their group of friends.

Sunday, March 31

The Prestidigitation Approximation

Season 4 • Episode 18

Leonard must choose between Penny and his new girlfriend, Priya.

Sunday, March 31

The Space Probe Disintegration

Season 8 • Episode 12

The guys agree to do something the girls like; Leonard and Sheldon butt heads.

Sunday, March 31

The Anxiety Optimization

Season 8 • Episode 13

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

Sunday, March 31

The Troll Manifestation

Season 8 • Episode 14

Sheldon and Leonard must defend themselves from an online bully's criticism after writing a paper.

Sunday, March 31

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.

Sunday, March 31

The Intimacy Acceleration

Season 8 • Episode 16

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

Sunday, March 31

The Colonization Application

Season 8 • Episode 17

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

Monday, April 1

The Leftover Thermalization

Season 8 • Episode 18

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

Monday, April 1

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.

Monday, April 1

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 1

The Communication Deterioration

Season 8 • Episode 21

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

Monday, April 1

The Graduation Transmission

Season 8 • Episode 22

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

Monday, April 1

The Maternal Combustion

Season 8 • Episode 23

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

Monday, April 1

The Commitment Determination

Season 8 • Episode 24

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

Monday, April 1

The Matrimonial Momentum

Season 9 • Episode 1

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

Monday, April 1

The Convention Conundrum

Season 7 • Episode 14

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

Monday, 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.

Monday, April 1

The 2003 Approximation

Season 9 • Episode 4

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

Tuesday, April 2

The Hofstadter Isotope

Season 2 • Episode 20

Wolowitz and Leonard decide to check out a local bar on Ladies' Night.

Tuesday, April 2

The Perspiration Implementation

Season 9 • Episode 5

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

Tuesday, April 2

The Helium Insufficiency

Season 9 • Episode 6

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

Tuesday, April 2

The Spock Resonance

Season 9 • Episode 7

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

Tuesday, April 2

The Mystery Date Observation

Season 9 • Episode 8

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

Tuesday, April 2

The Locomotive Manipulation

Season 7 • Episode 15

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

Wednesday, April 3

The Vegas Renormalization

Season 2 • Episode 21

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

Wednesday, April 3

The Platonic Permutation

Season 9 • Episode 9

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

Wednesday, April 3

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 3

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 3

The Sales Call Sublimination

Season 9 • Episode 12

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

Wednesday, April 3

The Empathy Optimization

Season 9 • Episode 13

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

Wednesday, April 3

The Meemaw Materialization

Season 9 • Episode 14

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

Wednesday, April 3

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.

Wednesday, April 3

The Table Polarization

Season 7 • Episode 16

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

Thursday, April 4

The Classified Materials Turbulence

Season 2 • Episode 22

Penny makes a surprising revelation about Leonard while on her date with Stuart.

Thursday, April 4

The Celebration Experimentation

Season 9 • Episode 17

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

Thursday, April 4

The Application Deterioration

Season 9 • Episode 18

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

Thursday, April 4

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.

Thursday, April 4

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.

Thursday, April 4

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.

Thursday, April 4

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.

Thursday, April 4

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.

Thursday, April 4

The Friendship Turbulence

Season 7 • Episode 17

Bernadette tries to negotiate peace between Sheldon and Wolowitz.

Thursday, April 4

The Conjugal Conjecture

Season 10 • Episode 1

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

Thursday, April 4

The Military Miniaturization

Season 10 • Episode 2

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

Thursday, April 4

The Dependence Transcendence

Season 10 • Episode 3

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

Thursday, April 4

The Cohabitation Experimentation

Season 10 • Episode 4

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

Friday, April 5

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.

Friday, April 5

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.

Friday, April 5

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."

Friday, April 5

The Veracity Elasticity

Season 10 • Episode 7

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

Friday, April 5

The Brain Bowl Incubation

Season 10 • Episode 8

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

Friday, April 5

The Geology Elevation

Season 10 • Episode 9

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

Friday, April 5

The Property Division Collision

Season 10 • Episode 10

Sheldon and Leonard divvy up their shared belongings.

Friday, April 5

The Birthday Synchronicity

Season 10 • Episode 11

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

Friday, April 5

The Mommy Observation

Season 7 • Episode 18

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

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The 12 Highest-Rated Episodes of 2018-2019 (PHOTOS)

WOODY HARRELSON, MARISA TOMEI

Ask Matt: ABC’s Norman Lear Tribute, Sitcom Life After Finales, ‘Mom,’ an ‘FBI’ Departure, and More

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The Biggest Stars on TV #10: Regina King

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Ask Matt: ‘Big Bang’ and ‘Thrones’ Finales, High Road for ‘Arrow,’ Drowning Sorrows Over ‘Whiskey’

The Change Constant/The Stockholm Syndrome
Spoiler Alert

‘Big Bang Theory’ Bosses on That Jaw-Dropping Series Finale Guest Star and More

THE BIG BANG THEORY
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In Their Own Words: The ‘Big Bang Theory’ Cast on the Emotional Ending

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Worth Watching: ‘Big Bang’ Grand Finale and Significant Others (‘Sheldon,’ ‘Better Things,’ ‘Grey’s’)

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Q&A

5 Questions With ‘The Big Bang Theory’ Star Melissa Rauch

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‘Big Bang Theory’: First Look at the Emotional Two-Part Series Finale (PHOTOS)

Big Bang Roundtable

TV Insider Podcast: A Farewell ‘Big Bang Theory’ Roundtable — Plus, Matt Roush’s Tribute

The Plagiarism Schism
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Prepare for an Emotional, Surprise-Filled ‘Big Bang Theory’ Series Finale

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Ask Matt: The ‘Big Bang’ Elevator, Classless Clown on ‘Good Fight,’ ‘Fosse/Verdon’ at the Emmys and More

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Why There Won’t Be a ‘Big Bang Theory’ Present-Day Spinoff After the Series Finale

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Cheers & Jeers: ‘Veronica Mars’ Trailer, ‘Big Bang’ Finale, ‘Game of Thrones’ & More (VIDEO)

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‘The Big Bang Theory’ Cast Honored With Historic Handprint Ceremony (PHOTOS)

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See the ‘Big Bang Theory’ Cast at the Emotional Final Episode Taping (PHOTOS)

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CBS Announces ‘The Big Bang Theory’ Retrospective Following the Series Finale

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Q&A

Wil Wheaton Looks Back on ‘Big Bang Theory’ and Weighs In on ‘Young Sheldon’ & ‘Family Guy’

The Property Division Collision

‘The Big Bang Theory’ Finale Will Leave One of Its Mysteries Unsolved

The Consummation Deviation
Preview

Reconciliations? Weddings? Reunions? ‘Big Bang Theory’ EPs on the Final Episodes

The Consummation Deviation

See How the ‘Big Bang Theory’ Cast Celebrated Their Major Milestone (PHOTOS)

The Proton Resurgence

‘Big Bang Theory’: Bob Newhart, Regina King & More Bangin’ Guest Stars (PHOTOS)

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Johnny Galecki & Kaley Cuoco Get Silly to Celebrate the ‘Big Bang Theory’s Final Episodes (PHOTOS)

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Behind the Scenes of the ‘Big Bang Theory’ Cover Shoot With Kaley Cuoco & Johnny Galecki (VIDEO)