The Best Episodes of The Big Bang Theory

Last Updated: Jun 15, 2019

A woman who moves into an apartment across the hall from two brilliant but socially awkward physicists shows them how little they know about life outside of the laboratory.

The Stockholm Syndrome

#1 - 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; Sheldon and Amy stick together; and Koothrappali makes a new friend, as the gang travels together into an uncharted future.

star 8.55
1,786 votes
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The Bath Item Gift Hypothesis

#2 - The Bath Item Gift Hypothesis

Season 2 - Episode 11

Penny starts dating Leonard's handsome colleague; Leonard and his friends are tortured by Sheldon's obsession with gift-giving etiquette.

star 8.36
3,230 votes
Directors: Mark Cendrowski
Writers: Bill Prady, Richard Rosenstock, Stephen Engel, Eric Kaplan
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The Thanksgiving Decoupling

#3 - The Thanksgiving Decoupling

Season 7 - Episode 9

An upset Sheldon protests when the entire gang drags him to Mrs. Wolowitz's house for Thanksgiving. Meanwhile, Penny and Leonard must deal with a mistake from her past.

star 8.33
4,922 votes
Directors: Mark Cendrowski
Writers: Eric Kaplan, Steve Holland, Maria Ferrari, Steven Molaro, Jim Reynolds, Jeremy Howe
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The Change Constant

#4 - The Change Constant

Season 12 - Episode 23

Sheldon and Amy await big news.

star 8.31
2,421 votes
Directors: Mark Cendrowski
Writers: Chuck Lorre, Steve Holland, Steve Molaro, Bill Prady, Eric Kaplan, Dave Goetsch, Maria Ferrari, Andy Gordon, Adam Faberman, Jeremy Howe, Tara Hernandez, Anthony Del Broccolo
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The Roommate Transmogrification

#5 - The Roommate Transmogrification

Season 4 - Episode 24

When Bernadette receives her PhD, Wolowitz feels emasculated. Raj and Leonard swap places and Penny does something she's regrets.

star 8.28
2,977 votes
Directors: Mark Cendrowski
Writers: Eddie Gorodetsky, Jim Reynolds
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The Countdown Reflection

#6 - The Countdown Reflection

Season 5 - Episode 24

The fifth season ends with Howard and Bernadette deciding to get married before his NASA mission, causing the gang to scurry into overdrive in an effort to stage the wedding. NASA astronaut Mike Massimino has a cameo as himself.

star 8.27
3,081 votes
Directors: Mark Cendrowski
Writers: Bill Prady, Eric Kaplan, Steve Holland
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The Good Guy Fluctuation

#7 - The Good Guy Fluctuation

Season 5 - Episode 7

A cute comic book artist puts Leonard and Priya’s relationship to the test, while Sheldon tries to scare the guys for Halloween.

star 8.25
3,406 votes
Directors: Mark Cendrowski
Writers: Chuck Lorre, Dave Goetsch, Maria Ferrari, Bill Prady, Steven Molaro, Jim Reynolds
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The Scavenger Vortex

#8 - The Scavenger Vortex

Season 7 - Episode 3

When the entire gang competes in a cutthroat scavenger hunt designed by Raj that tests their science knowledge and street smarts, it brings out the best – and worst – in everyone.

star 8.24
5,010 votes
Directors: Mark Cendrowski
Writers: Dave Goetsch, Eric Kaplan, Steve Holland
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The Lunar Excitation

#9 - The Lunar Excitation

Season 3 - Episode 23

While Penny worries that dating Leonard has ruined her for normal guys, Wolowitz and Koothrappali search for Sheldon's perfect match online.

star 8.22
2,925 votes
Directors: Peter Chakos
Writers: Chuck Lorre, Bill Prady, Maria Ferrari
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The Romance Resonance

#10 - The Romance Resonance

Season 7 - Episode 6

Sheldon's latest scientific breakthrough makes him feel like a fraud – and threatens to haunt him forever. Meanwhile, Howard's romantic gesture to Bernadette causes Penny to step up her game with Leonard.

star 8.22
4,940 votes
Directors: Mark Cendrowski
Writers: Eric Kaplan, Jim Reynolds, Tara Hernandez, Steven Molaro, Steve Holland, Maria Ferrari
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The Closure Alternative

#11 - The Closure Alternative

Season 6 - Episode 21

Amy tries to help Sheldon get over his compulsive need for closure when one of his favorite TV shows is canceled; Raj discovers a secret about Lucy.

star 8.21
4,024 votes
Directors: Mark Cendrowski
Writers: Steven Molaro, Jim Reynolds, Steve Holland
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The Love Spell Potential

#12 - The Love Spell Potential

Season 6 - Episode 23

Amy and Sheldon's relationship takes a surprising turn during a game of "Dungeons & Dragons"; Lucy and Koothrappali have an awkward date.

star 8.19
4,019 votes
Directors: Anthony Rich
Writers: Chuck Lorre, Jim Reynolds, Maria Ferrari
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The Hawking Excitation

#13 - The Hawking Excitation

Season 5 - Episode 21

When Wolowitz gets to work with Stephen Hawking, Sheldon is willing to do anything to meet his hero.

star 8.19
3,103 votes
Directors: Mark Cendrowski
Writers: Steve Holland, Steven Molaro, Bill Prady, Chuck Lorre, Eric Kaplan, Maria Ferrari
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The Long Distance Dissonance

#14 - The Long Distance Dissonance

Season 10 - Episode 24

The gang is concerned when Sheldon’s former admirer, Dr. Ramona Nowitzki, resurfaces while Amy is away at Princeton.

star 8.19
9,261 votes
Directors: Mark Cendrowski
Writers: Steven Molaro, Eric Kaplan, Jim Reynolds, Chuck Lorre, Steve Holland, Tara Hernandez
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The Opening Night Excitation

#15 - The Opening Night Excitation

Season 9 - Episode 11

As the guys prepare to go to the premiere of the new Star Wars movie, Sheldon plans a special event for Amy's birthday.

star 8.18
6,762 votes
Directors: Mark Cendrowski
Writers: Steven Molaro, Eric Kaplan, Tara Hernandez, Steve Holland, Jim Reynolds, Maria Ferrari
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The Beta Test Initiation

#16 - The Beta Test Initiation

Season 5 - Episode 14

Leonard and Penny deal with the idea of starting a relationship again and Raj finally finds a "woman" he can talk to without being drunk, in the form of Siri on his new phone. Meanwhile, Sheldon decides to start a YouTube series entitled "Sheldon Cooper presents Fun with Flags" with the help of Amy.

star 8.18
3,082 votes
Directors: Mark Cendrowski
Writers: Chuck Lorre, Steven Molaro, Eric Kaplan, Bill Prady, Dave Goetsch, Maria Ferrari
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The Launch Acceleration

#17 - The Launch Acceleration

Season 5 - Episode 23

When NASA moves up Howard's mission, he must face his fears and Bernadette's dad, thus putting the wedding plans in jeopardy. Meanwhile, Leonard says something surprising to Penny in the bedroom.

star 8.17
3,045 votes
Directors: Mark Cendrowski
Writers: Chuck Lorre, Steven Molaro, Jim Reynolds, Bill Prady, Steve Holland, Maria Ferrari
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The Werewolf Transformation

#18 - The Werewolf Transformation

Season 5 - Episode 18

Sheldon becomes agitated when his regular barber is out sick. Astronaut training causes Howard to reconsider wanting to go into space. Penny beats Leonard in chess, the first time she plays.

star 8.16
3,031 votes
Directors: Mark Cendrowski
Writers: Chuck Lorre, Todd Craig, Gary Torvinen, Bill Prady, Steven Molaro, Jim Reynolds, Maria Ferrari
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The Tenure Turbulence

#19 - The Tenure Turbulence

Season 6 - Episode 20

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

star 8.16
3,960 votes
Directors: Mark Cendrowski
Writers: Chuck Lorre, Steve Holland, Jim Reynolds
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The Indecision Amalgamation

#20 - The Indecision Amalgamation

Season 7 - Episode 19

Raj struggles with guilt when he dates two women at once; Penny has a chance to play a part in a cheesy movie; Sheldon is torn between two gaming systems.

star 8.16
4,786 votes
Writers: Bill Prady, Eric Kaplan, Jim Reynolds, Steven Molaro, David Goetsch, Steve Holland
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The Prestidigitation Approximation

#21 - The Prestidigitation Approximation

Season 4 - Episode 18

Sheldon is baffled by Wolowitz's magic trick. Meanwhile, Leonard realizes dating Priya may make it impossible to continue being friends with Penny.

star 8.16
2,996 votes
Directors: Mark Cendrowski
Writers: Eddie Gorodetsky
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The Bow Tie Asymmetry

#22 - The Bow Tie Asymmetry

Season 11 - Episode 24

When Amy’s parents and Sheldon’s family arrive for the wedding, everybody is focused on making sure all goes according to plan – everyone except the bride and groom.

star 8.16
4,007 votes
Directors: Mark Cendrowski
Writers: Chuck Lorre, Steven Molaro, Maria Ferrari, Steve Holland, Eric Kaplan, Tara Hernandez
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The Fish Guts Displacement

#23 - The Fish Guts Displacement

Season 6 - Episode 10

When Amy gets sick, Sheldon tries to nurse her back to health; Wolowitz and his father-in-law plan a fishing trip.

star 8.16
3,507 votes
Directors: Mark Cendrowski
Writers: Chuck Lorre, Bill Prady, Tara Hernandez, Steven Molaro, Eric Kaplan, Jim Reynolds
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The Staircase Implementation

#24 - The Staircase Implementation

Season 3 - Episode 22

Leonard tells Penny about how he met Sheldon for the first time...and what happened to the elevator.

star 8.15
3,026 votes
Directors: Mark Cendrowski
Writers: Lee Aronsohn, Steven Molaro, Steve Holland
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The Bakersfield Expedition

#25 - The Bakersfield Expedition

Season 6 - Episode 13

As the guys don costumes and go on a road trip to a comic book convention, the ladies decide to stay home and try to interpret a comic book.

star 8.14
3,342 votes
Directors: Mark Cendrowski
Writers: Chuck Lorre, Jim Reynolds, Steve Holland
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