The Big Bang Theory

Season
  • The Lunar Excitation

    The Lunar Excitation Edit this episode

    Season 3, Episode 23 - Aired 05/24/2010

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

  • The Staircase Implementation

    The Staircase Implementation Edit this episode

    Season 3, Episode 22 - Aired 05/17/2010

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

  • The Plimpton Stimulation

    The Plimpton Stimulation Edit this episode

    Season 3, Episode 21 - Aired 05/10/2010

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

  • The Spaghetti Catalyst

    The Spaghetti Catalyst Edit this episode

    Season 3, Episode 20 - Aired 05/03/2010

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

  • The Wheaton Recurrence

    The Wheaton Recurrence Edit this episode

    Season 3, Episode 19 - Aired 04/12/2010

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

  • The Pants Alternative

    The Pants Alternative Edit this episode

    Season 3, Episode 18 - Aired 03/22/2010

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

  • The Precious Fragmentation

    The Precious Fragmentation Edit this episode

    Season 3, Episode 17 - Aired 03/08/2010

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

  • The Excelsior Acquisition

    The Excelsior Acquisition Edit this episode

    Season 3, Episode 16 - Aired 03/01/2010

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

  • The Large Hadron Collision

    The Large Hadron Collision Edit this episode

    Season 3, Episode 15 - Aired 02/08/2010

    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.

  • The Einstein Approximation

    The Einstein Approximation Edit this episode

    Season 3, Episode 14 - Aired 02/01/2010

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

  • The Bozeman Reaction

    The Bozeman Reaction Edit this episode

    Season 3, Episode 13 - Aired 01/18/2010

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

  • The Psychic Vortex

    The Psychic Vortex Edit this episode

    Season 3, Episode 12 - Aired 01/11/2010

    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.

  • The Maternal Congruence

    The Maternal Congruence Edit this episode

    Season 3, Episode 11 - Aired 12/14/2009

    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.

  • The Gorilla Experiment

    The Gorilla Experiment Edit this episode

    Season 3, Episode 10 - Aired 12/07/2009

    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.

  • The Vengeance Formulation

    The Vengeance Formulation Edit this episode

    Season 3, Episode 9 - Aired 11/23/2009

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

  • The Adhesive Duck Deficiency

    The Adhesive Duck Deficiency Edit this episode

    Season 3, Episode 8 - Aired 11/16/2009

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

  • The Guitarist Amplification

    The Guitarist Amplification Edit this episode

    Season 3, Episode 7 - Aired 11/09/2009

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

  • The Cornhusker Vortex

    The Cornhusker Vortex Edit this episode

    Season 3, Episode 6 - Aired 11/02/2009

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

  • The Creepy Candy Coating Corollary

    The Creepy Candy Coating Corollary Edit this episode

    Season 3, Episode 5 - Aired 10/19/2009

    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.

  • The Pirate Solution

    The Pirate Solution Edit this episode

    Season 3, Episode 4 - Aired 10/12/2009

    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.

  • The Gothowitz Deviation

    The Gothowitz Deviation Edit this episode

    Season 3, Episode 3 - Aired 10/05/2009

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

  • The Jiminy Conjecture

    The Jiminy Conjecture Edit this episode

    Season 3, Episode 2 - Aired 09/28/2009

    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.

  • The Electric Can Opener Fluctuation

    The Electric Can Opener Fluctuation Edit this episode

    Season 3, Episode 1 - Aired 09/21/2009

    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.