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The Best Episodes of The Big Bang Theory Season 3

Every episode of The Big Bang Theory Season 3 ranked from best to worst. Discover the Best Episodes of The Big Bang Theory Season 3!

Binge this in 7h 48m·Peaking at 9.0/10
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Episode Rankings

  1. #1 Fan Favorite
    The Big Bang Theory Season 3 Episode 22 - The Staircase Implementation
    9.0/10(6342 votes)

    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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  2. The Big Bang Theory Season 3 Episode 8 - The Adhesive Duck Deficiency
    8.9/10(6611 votes)

    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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  3. The Big Bang Theory Season 3 Episode 23 - The Lunar Excitation
    8.6/10(5028 votes)

    S3:E23

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

    Director:Peter Chakos
    Writer:Unknown

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  4. The Big Bang Theory Season 3 Episode 10 - The Gorilla Experiment
    8.4/10(4997 votes)

    S3:E10

    Penny gets help from Sheldon in order to understand what Leonard's work is, while Wolowitz develops a jealousy when Leonard starts hanging out with his new girlfriend.

    Director:Mark Cendrowski
    Writer:Unknown

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  5. The Big Bang Theory Season 3 Episode 14 - The Einstein Approximation
    8.4/10(5099 votes)

    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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  6. The Big Bang Theory Season 3 Episode 17 - The Precious Fragmentation
    8.4/10(5002 votes)

    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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  7. The Big Bang Theory Season 3 Episode 5 - The Creepy Candy Coating Corollary
    8.3/10(4975 votes)

    S3:E5

    After overhearing that Wil Wheaton is entering a trading-card competition, Sheldon decides to enter it himself. Meanwhile, Penny sets up one of her friends on a date with Wolowitz.

    Director:Mark Cendrowski
    Writer:Unknown

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  8. The Big Bang Theory Season 3 Episode 9 - The Vengeance Formulation
    8.3/10(4937 votes)

    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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  9. The Big Bang Theory Season 3 Episode 11 - The Maternal Congruence
    8.3/10(4912 votes)

    S3:E11

    A Christmas visit from his mother has Leonard discovering she's kept a lot of news from him that she shares with Sheldon and worrying if she'll approve of his romance with Penny.

    Director:Mark Cendrowski
    Writer:Unknown

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  10. The Big Bang Theory Season 3 Episode 18 - The Pants Alternative
    8.3/10(4911 votes)

    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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  11. The Big Bang Theory Season 3 Episode 1 - The Electric Can Opener Fluctuation
    8.2/10(5293 votes)

    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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  12. The Big Bang Theory Season 3 Episode 12 - The Psychic Vortex
    8.2/10(4813 votes)

    S3:E12

    Leonard is aghast to find out a secret of Penny's: she believes in psychics. Meanwhile, Sheldon tries to assist Koothrappali in picking up a girl at a university mixer.

    Director:Mark Cendrowski
    Writer:Unknown

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  13. The Big Bang Theory Season 3 Episode 16 - The Excelsior Acquisition
    8.2/10(4752 votes)

    S3:E16

    Sheldon winds up in traffic court when he gets a ticket because of Penny.

    Director:Peter Chakos
    Writer:Unknown

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  14. The Big Bang Theory Season 3 Episode 3 - The Gothowitz Deviation
    8.1/10(4976 votes)

    S3:E3

    Howard and Raj visit a Goth nightclub to pick up women while Sheldon attempts to build a better Penny using chocolate-based behavior modification.

    Director:Mark Cendrowski
    Writer:Unknown

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  15. The Big Bang Theory Season 3 Episode 20 - The Spaghetti Catalyst
    8.1/10(4616 votes)

    S3:E20

    When Leonard and Penny aren't speaking, Sheldon goes to extremes to keep them both happy.

    Director:Anthony Rich
    Writers:Lee Aronsohn, Chuck Lorre, Bill Prady, Steven Molaro

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  16. The Big Bang Theory Season 3 Episode 21 - The Plimpton Stimulation
    8.1/10(4924 votes)

    S3:E21

    Leonard and Sheldon compete for the attention of a famous female physicist.

    Director:Mark Cendrowski
    Writer:Unknown

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  17. The Big Bang Theory Season 3 Episode 4 - The Pirate Solution
    8.0/10(4865 votes)

    S3:E4

    Raj must find a new job or be sent back to India, but Sheldon has a solution, which leaves Leonard and Penny dealing with Howard as a third wheel.

    Director:Mark Cendrowski
    Writer:Steve Holland

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  18. The Big Bang Theory Season 3 Episode 13 - The Bozeman Reaction
    8.0/10(4712 votes)

    S3:E13

    When their apartment is robbed, Leonard and Sheldon turn to their friends to create a state-of-the-art security system.

    Director:Mark Cendrowski
    Writer:Unknown

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  19. The Big Bang Theory Season 3 Episode 15 - The Large Hadron Collision
    8.0/10(4626 votes)

    S3:E15

    Leonard can only bring one guest on a trip to see CERN's Large Hadron Collider (the world's largest and highest energy particle accelerator) in Switzerland on Valentine's Day.

    Director:Mark Cendrowski
    Writer:Unknown

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  20. The Big Bang Theory Season 3 Episode 19 - The Wheaton Recurrence
    7.8/10(4608 votes)

    S3:E19

    A fight between Leonard and Penny threatens their relationship, while Sheldon battles Wil Wheaton in bowling.

    Director:Mark Cendrowski
    Writer:Unknown

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  21. The Big Bang Theory Season 3 Episode 2 - The Jiminy Conjecture
    7.7/10(4857 votes)

    S3:E2

    Leonard and Penny struggle to recover from an awkward first hookup while Sheldon and Howard stake their best comic books on a bet to determine the species of a cricket.

    Director:Mark Cendrowski
    Writer:Jim Reynolds

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  22. The Big Bang Theory Season 3 Episode 7 - The Guitarist Amplification
    7.7/10(4726 votes)

    S3:E7

    A squabble between Leonard and Penny sees Sheldon playing mediator, though out of his own incovenience from the sitiation rather than altruism.

    Director:Mark Cendrowski
    Writer:Unknown

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  23. The Big Bang Theory Season 3 Episode 6 - The Cornhusker Vortex
    7.4/10(4685 votes)

    S3:E6

    Sheldon becomes Leonard's teacher in order to understand football, while an incident with flying a kite threatens Howard and Raj's friendship.

    Director:Mark Cendrowski
    Writer:Unknown

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Season 3 Ratings Summary

"The Staircase Implementation" is the best rated episode of The Big Bang Theory season 3. It scored 9.0/10 from 6,342 votes. Directed by Mark Cendrowski and written by Unknown, it aired on May 17, 2010. This episode is rated 0.1 points higher than the second-best, "The Adhesive Duck Deficiency".