The Big Bang Theory

Episodes

Season 3 · 23 episodes

• E1 The Electric Can Opener Fluctuation
  Sep 21, 2009 25 min

  When Sheldon learns the guys tampered with his expedition data he got from the arctic, he returns 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.

• E2 The Jiminy Conjecture
  Sep 28, 2009 25 min

  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.

• E3 The Gothowitz Deviation
  Oct 5, 2009 25 min

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

• E4 The Pirate Solution
  Oct 12, 2009 25 min

  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.

• E5 The Creepy Candy Coating Corollary
  Oct 19, 2009 25 min

  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.

• E6 The Cornhusker Vortex
  Nov 2, 2009 25 min

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

• E7 The Guitarist Amplification
  Nov 9, 2009 25 min

  When Penny has an old friend staying over at her apartment, an argument ensues between her and Leonard, causing Sheldon to get caught between the couple.

• E8 The Adhesive Duck Deficiency
  Nov 16, 2009 25 min

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

• E9 The Vengeance Formulation
  Nov 23, 2009 25 min

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

• E10 The Gorilla Experiment
  Dec 7, 2009 25 min

  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.

• E11 The Maternal Congruence
  Dec 14, 2009 25 min

  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.

• E12 The Psychic Vortex
  Jan 11, 2010 25 min

  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.

• E13 The Bozeman Reaction
  Jan 18, 2010 25 min

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

• E14 The Einstein Approximation
  Feb 1, 2010 25 min

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

• E15 The Large Hadron Collision
  Feb 8, 2010 25 min

  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.

• E16 The Excelsior Acquisition
  Mar 1, 2010 25 min

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

• E17 The Precious Fragmentation
  Mar 8, 2010 25 min

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

• E18 The Pants Alternative
  Mar 22, 2010 25 min

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

• E19 The Wheaton Recurrence
  Apr 12, 2010 25 min

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

• E20 The Spaghetti Catalyst
  May 3, 2010 25 min

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

• E21 The Plimpton Stimulation
  May 10, 2010 25 min

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

• E22 The Staircase Implementation
  May 17, 2010 25 min

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

• E23 The Lunar Excitation
  May 24, 2010 25 min

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