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The Best Episodes of The Big Bang Theory

Every episode of The Big Bang Theory ranked from best to worst. Let's dive into the Best Episodes of The Big Bang Theory!

Binge this in 3d 22h•Peaking at 9.9/10

Physicists Leonard and Sheldon find their nerd-centric social circle with pals Howard and Raj expanding when aspiring actress Penny moves in next door.

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Episode Rankings

  1. #1 Fan Favorite
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    The Big Bang Theory Season 12 Episode 1 - The Conjugal Configuration
    9.9/10(4523 votes)

    #1 - The Conjugal Configuration

    S12:E1

    Sheldon and Amy's honeymoon runs aground in New York. Penny and Leonard discover they are uncomfortably similar to Amy's parents. Raj insults physicist Neil deGrasse Tyson and starts a Twitter war.

    Director:Mark Cendrowski
    Writer:Unknown

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  2. The Big Bang Theory Season 3 Episode 22 - The Staircase Implementation
    8.5/10(6167 votes)

    #2 - The Staircase Implementation

    S3:E22

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

    Director:Mark Cendrowski
    Writer:Unknown

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  3. The Big Bang Theory Season 3 Episode 8 - The Adhesive Duck Deficiency
    8.4/10(6436 votes)

    #3 - The Adhesive Duck Deficiency

    S3:E8

    With Leonard, Howard and Raj away camping in the desert, an injured Penny has only Sheldon to rely on.

    Director:Mark Cendrowski
    Writer:Unknown

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  4. The Big Bang Theory Season 9 Episode 11 - The Opening Night Excitation
    8.4/10(6121 votes)

    #4 - The Opening Night Excitation

    S9:E11

    After more than five years of dating, Sheldon and Amy spend their first night together. Also, Leonard, Wolowitz, and Koothrappali must decide who will take their extra Star Wars movie ticket.

    Director:Mark Cendrowski
    Writer:Unknown

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  5. The Big Bang Theory Season 2 Episode 11 - The Bath Item Gift Hypothesis
    8.3/10(8086 votes)

    #5 - The Bath Item Gift Hypothesis

    S2:E11

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

    Director:Mark Cendrowski
    Writer:Unknown

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  6. The Big Bang Theory Season 2 Episode 15 - The Maternal Capacitance
    8.2/10(5807 votes)

    #6 - The Maternal Capacitance

    S2:E15

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

    Director:Mark Cendrowski
    Writer:Unknown

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    The 20 WORST Episodes of The Big Bang Theory

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  7. The Big Bang Theory Season 12 Episode 24 - Unraveling the Mystery: A Big Bang Farewell
    8.2/10(12044 votes)

    #7 - Unraveling the Mystery: A Big Bang Farewell

    S12:E24

    Johnny Galecki and Kaley Cuoco will lead fans on a trip down memory lane, sharing some of the best-kept backstage secrets and personal memories from the past 12 years.

    Director:Unknown
    Writer:Chuck Lorre

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  8. The Big Bang Theory Season 6 Episode 13 - The Bakersfield Expedition
    8.1/10(4587 votes)

    #8 - The Bakersfield Expedition

    S6:E13

    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.

    Director:Mark Cendrowski
    Writer:Unknown

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  9. The Big Bang Theory Season 7 Episode 9 - The Thanksgiving Decoupling
    8.1/10(5543 votes)

    #9 - The Thanksgiving Decoupling

    S7:E9

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

    Director:Mark Cendrowski
    Writer:Unknown

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  10. The Big Bang Theory Season 2 Episode 3 - The Barbarian Sublimation
    8.0/10(5920 votes)

    #10 - The Barbarian Sublimation

    S2:E3

    Sheldon creates a monster when he introduces Penny to online gaming.

    Director:Mark Cendrowski
    Writer:Unknown

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  11. The Big Bang Theory Season 2 Episode 7 - The Panty Piñata Polarization
    8.0/10(5570 votes)

    #11 - The Panty Piñata Polarization

    S2:E7

    When Sheldon bans Penny from the apartment for numerous minor infractions, she decides to retaliate.

    Director:Mark Cendrowski
    Writer:Unknown

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  12. The Big Bang Theory Season 3 Episode 14 - The Einstein Approximation
    8.0/10(4954 votes)

    #12 - The Einstein Approximation

    S3:E14

    Sheldon's search for the answer to a physics problem leads him to work at the Cheesecake Factory with Penny.

    Director:Mark Cendrowski
    Writer:Unknown

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  13. The Big Bang Theory Season 3 Episode 17 - The Precious Fragmentation
    8.0/10(4856 votes)

    #13 - The Precious Fragmentation

    S3:E17

    When the guys find a ring from "The Lord of the Rings" at a garage sale, it threatens to tear them apart.

    Director:Mark Cendrowski
    Writer:Unknown

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  14. The Big Bang Theory Season 3 Episode 18 - The Pants Alternative
    8.0/10(4765 votes)

    #14 - The Pants Alternative

    S3:E18

    Sheldon's friends come to his aid when his fear of public speaking stands between him and a coveted award.

    Director:Mark Cendrowski
    Writer:Unknown

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  15. The Big Bang Theory Season 4 Episode 1 - The Robotic Manipulation
    8.0/10(5399 votes)

    #15 - The Robotic Manipulation

    S4:E1

    Penny tags along on Sheldon's first ever date; Wolowitz finds a new use for a robotic arm.

    Director:Mark Cendrowski
    Writer:Unknown

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  16. The Big Bang Theory Season 4 Episode 11 - The Justice League Recombination
    8.0/10(4998 votes)

    #16 - The Justice League Recombination

    S4:E11

    The guys find a "super" use for Penny's new boyfriend, Zack, when they enter a costume contest as the Justice League.

    Director:Mark Cendrowski
    Writer:Unknown

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  17. The Big Bang Theory Season 5 Episode 24 - The Countdown Reflection
    8.0/10(4625 votes)

    #17 - The Countdown Reflection

    S5:E24

    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.

    Director:Mark Cendrowski
    Writer:Unknown

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  18. The Big Bang Theory Season 7 Episode 3 - The Scavenger Vortex
    8.0/10(5380 votes)

    #18 - The Scavenger Vortex

    S7:E3

    When the entire gang competes in a scavenger hunt designed by Raj, it brings out the best - and worst - in everyone.

    Director:Mark Cendrowski
    Writer:Unknown

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  19. The Big Bang Theory Season 7 Episode 6 - The Romance Resonance
    8.0/10(4652 votes)

    #19 - The Romance Resonance

    S7:E6

    Sheldon's latest scientific breakthrough leaves him feeling like a fraud; a romantic gesture between Howard and Bernadette causes Penny to up her game with Leonard.

    Director:Mark Cendrowski
    Writer:Unknown

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  20. The Big Bang Theory Season 12 Episode 23 - The Change Constant / The Stockholm Syndrome
    8.0/10(5835 votes)

    #20 - The Change Constant / The Stockholm Syndrome

    S12:E23

    Sheldon and Amy await big news. Meanwhile, Penny and Leonard have some big news of their own. Also, Howard and Bernadette face the stressful challenge of leaving their kids for the first time and Raj makes a new friend, as the gang travels together into an uncharted future.

    Director:Mark Cendrowski
    Writers:Eric Kaplan, Chuck Lorre, Bill Prady, Steven Molaro, David Goetsch, Steve Holland, Maria Ferrari, Andy Gordon, Anthony Del Broccolo, Tara Hernandez, Jeremy Howe, Adam Faberman

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  21. The Big Bang Theory Season 1 Episode 17 - The Tangerine Factor
    7.9/10(5642 votes)

    #21 - The Tangerine Factor

    S1:E17

    Penny's break-up spurs Leonard to summon the courage to ask her out, and each goes to Sheldon for advice on their upcoming date.

    Director:Mark Cendrowski
    Writer:Unknown

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  22. The Big Bang Theory Season 2 Episode 1 - The Bad Fish Paradigm
    7.9/10(5492 votes)

    #22 - The Bad Fish Paradigm

    S2:E1

    Penny's first date with Leonard goes awry; Penny finds Sheldon to be an unwilling confidant.

    Director:Mark Cendrowski
    Writer:Unknown

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  23. The Big Bang Theory Season 2 Episode 6 - The Cooper-Nowitzki Theorem
    7.9/10(5262 votes)

    #23 - The Cooper-Nowitzki Theorem

    S2:E6

    Sheldon and the gang are confused when a young grad student is attracted to him.

    Director:Mark Cendrowski
    Writer:Unknown

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  24. The Big Bang Theory Season 3 Episode 1 - The Electric Can Opener Fluctuation
    7.9/10(5145 votes)

    #24 - The Electric Can Opener Fluctuation

    S3:E1

    When Sheldon learns the guys tampered with his expedition data he got from the arctic, he leaves to Texas in disgrace. This results in the guys following him, which threatens Leonard's hope for some romantic time with Penny and the guys' friendship with Sheldon.

    Director:Mark Cendrowski
    Writer:Steven Molaro

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  25. The Big Bang Theory Season 3 Episode 9 - The Vengeance Formulation
    7.9/10(4795 votes)

    #25 - The Vengeance Formulation

    S3:E9

    After he's humiliated on National Public Radio, Sheldon vows to destroy Kripke, while Wolowitz tries not to destroy his new relationship with Bernadette.

    Director:Mark Cendrowski
    Writer:Unknown

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Best Episodes Summary

"The Conjugal Configuration" is the best rated episode of "The Big Bang Theory". It scored 9.9/10 based on 4523 votes. Directed by Mark Cendrowski and written by Unknown, it aired on 9/24/2018. This episode scored 1.4 points higher than the second highest rated, "The Staircase Implementation".