The Big Bang Theory

The Big Bang Theory Season 3

TV Show"Smart is the new sexy."

Season 3 Plot

Worlds collide in Season 3! A love affair with Penny has opened a big, wide, wonderful world of romance for Leonard. But Sheldon likes the world just the way it was, thank you. All of which makes for a zany comic triangle with brainy, clueless Sheldon and practical, grounded Penny hilariously vying for the role of hypotenuse.

The Big Bang Theory Season 3 aired on September 21st, 2009.

Watch 'The Big Bang Theory' Season 3 Online

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Season 3 Episodes

77

1. The Electric Can Opener Fluctuation

September 21st, 200922 min

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.

73

2. The Jiminy Conjecture

September 28th, 200921 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.

74

3. The Gothowitz Deviation

October 5th, 200920 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.

73

4. The Pirate Solution

October 12th, 200921 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.

75

5. The Creepy Candy Coating Corollary

October 19th, 200921 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.

69

6. The Cornhusker Vortex

November 2nd, 200920 min

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

72

7. The Guitarist Amplification

November 9th, 200919 min

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

82

8. The Adhesive Duck Deficiency

November 16th, 200921 min

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

76

9. The Vengeance Formulation

November 23rd, 200919 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.

78

10. The Gorilla Experiment

December 7th, 200921 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.

76

11. The Maternal Congruence

December 14th, 200920 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.

76

12. The Psychic Vortex

January 11th, 201019 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.

76

13. The Bozeman Reaction

January 18th, 201020 min

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

79

14. The Einstein Approximation

February 1st, 201019 min

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

76

15. The Large Hadron Collision

February 8th, 201021 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.

77

16. The Excelsior Acquisition

March 1st, 201021 min

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

78

17. The Precious Fragmentation

March 8th, 201020 min

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

78

18. The Pants Alternative

March 22nd, 201021 min

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

72

19. The Wheaton Recurrence

April 12th, 201021 min

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

76

20. The Spaghetti Catalyst

May 3rd, 201020 min

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

73

21. The Plimpton Stimulation

May 10th, 201021 min

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

83

22. The Staircase Implementation

May 17th, 201020 min

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

76

23. The Lunar Excitation

May 24th, 201020 min

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

All Seasons

Season 12

Season 12

Sep 24, 2018
Season 11

Season 11

Sep 25, 2017
Season 10

Season 10

Sep 19, 2016
Season 9

Season 9

Sep 21, 2015
Season 8

Season 8

Sep 22, 2014
Season 7

Season 7

Sep 26, 2013
Season 6

Season 6

Sep 27, 2012
Season 5

Season 5

Sep 22, 2011
Season 4

Season 4

Sep 23, 2010
Season 3

Season 3

Sep 21, 2009
Season 2

Season 2

Sep 22, 2008
Season 1

Season 1

Sep 24, 2007