Watch Season 3

Season 3 Episodes

Episode Guide

The Lunar Excitation

Season 3, Episode 23 - Air Date: 5/21/2010
While Penny worries that dating Leonard has ruined her for normal guys, Wolowitz and Koothrappali search for Sheldon's perfect match online.
Episode Guide

The Staircase Implementation

Season 3, Episode 22 - Air Date: 5/12/2010
Leonard tells Penny about how he met Sheldon for the first time...and what happened to the elevator.
Episode Guide

The Plimpton Stimulation

Season 3, Episode 21 - Air Date: 5/5/2010
Leonard and Sheldon compete for the attention of a famous female physicist.
Episode Guide

The Spaghetti Catalyst

Season 3, Episode 20 - Air Date: 4/28/2010
When Leonard and Penny aren't speaking, Sheldon goes to extremes to keep them both happy.
Episode Guide

The Wheaton Recurrence

Season 3, Episode 19 - Air Date: 4/7/2010
A fight between Leonard and Penny threatens their relationship, while Sheldon battles Wil Wheaton in bowling.
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The Pants Alternative

Season 3, Episode 18 - Air Date: 3/17/2010
Sheldon's friends come to his aid when his fear of public speaking stands between him and a coveted award.
Episode Guide

The Precious Fragmentation

Season 3, Episode 17 - Air Date: 3/5/2010
When the guys find a ring from "The Lord of the Rings" at a garage sale, it threatens to tear them apart.
Episode Guide

The Excelsior Acquisition

Season 3, Episode 16 - Air Date: 2/23/2010
Sheldon winds up in traffic court when he gets a ticket because of Penny.
Episode Guide

The Large Hadron Collision

Season 3, Episode 15 - Air Date: 2/8/2010
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.
Episode Guide

The Einstein Approximation

Season 3, Episode 14 - Air Date: 2/8/2010
Sheldon's search for the answer to a physics problem leads him to work at the Cheesecake Factory with Penny.
Episode Guide

The Bozeman Reaction

Season 3, Episode 13 - Air Date: 1/18/2010
When their apartment is robbed, Leonard and Sheldon turn to their friends to create a state-of-the-art security system.
Episode Guide

The Psychic Vortex

Season 3, Episode 12 - Air Date: 1/11/2010
While Sheldon and Koothrappali attend a university mixer, Leonard is upset to discover that Penny believes in psychics.
Episode Guide

The Maternal Congruence

Season 3, Episode 11 - Air Date: 12/14/2009
A visit from Leonard's mother delights Sheldon and horrifies Leonard.
Episode Guide

The Gorilla Experiment

Season 3, Episode 10 - Air Date: 12/7/2009
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.
Episode Guide

The Vengeance Formulation

Season 3, Episode 9 - Air Date: 11/24/2009
After he's humiliated on National Public Radio, Sheldon vows to destroy Kripke, while Wolowitz tries not to destroy his new relationship with Bernadette.
Episode Guide

The Adhesive Duck Deficiency

Season 3, Episode 8 - Air Date: 11/16/2009
With Leonard, Howard and Raj away camping in the desert, an injured Penny has only Sheldon to rely on.
Episode Guide

The Guitarist Amplification

Season 3, Episode 7 - Air Date: 11/9/2009
A squabble between Leonard and Penny sees Sheldon playing mediator, though out of his own incovenience from the sitiation rather than altruism.
Episode Guide

The Cornhusker Vortex

Season 3, Episode 6 - Air Date: 10/16/2009
Sheldon becomes Leonard's teacher in order to understand football, while an incident with flying a kite threatens Howard and Raj's friendship.
Episode Guide

The Creepy Candy Coating Corollary

Season 3, Episode 5 - Air Date: 10/19/2009
After overhearing that Wil Wheaton is entering a trading-card competition, Sheldon decides to enter it himself.
Episode Guide

The Pirate Solution

Season 3, Episode 4 - Air Date: 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.
Episode Guide

The Gothowitz Deviation

Season 3, Episode 3 - Air Date: 10/5/2009
Sheldon believe he can train Penny like a lab rat on the next episode of The Big Bang Theory.Copy and paste this link in your browser,and watch full episode in HD :
Episode Guide

The Jiminy Conjecture

Season 3, Episode 2 - Air Date: 9/22/2009
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.
Episode Guide

The Electric Can Opener Fluctuation

Season 3, Episode 1 - Air Date: 8/17/2009
When Sheldon learns the guys tampered with his expedition data he got from the arctic, he leaves to Texas in disgrace.

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