Title Airs On

S3:E1 The Electric Can Opener Fluctuation

The Big Bang Theory
09/21/2009 10:49 am EDT

After returning from the North Pole, a conflict among the guys sends Sheldon back to Texas and interferes with Leonard's ...read more After returning from the North Pole, a conflict among the guys sends Sheldon back to Texas and interferes with Leonard's reunion with Penny. show less

S3:E2 The Jiminy Conjecture

The Big Bang Theory
09/28/2009 10:50 am EDT

Leonard and Penny's first night together goes awkwardly. Sheldon and Howard wager on the species of a cricket.

S3:E3 The Gothowitz Deviation

The Big Bang Theory
10/05/2009 10:50 am EDT

Sheldon attempts to covertly alter Penny's habits, while Howard and Raj try their luck meeting women at a Goth-style club.

S3:E4 The Pirate Solution

The Big Bang Theory
10/12/2009 10:50 am EDT

When Raj has to find a new job or be sent back to India, Sheldon's solution leaves Leonard and Penny dealing with Howard as ...read more When Raj has to find a new job or be sent back to India, Sheldon's solution leaves Leonard and Penny dealing with Howard as the third wheel. show less

S3:E5 The Creepy Candy Coating Corollary

The Big Bang Theory
10/19/2009 10:51 am EDT

Leonard is forced to ask Penny to set Howard up with one of her friends, while Sheldon seeks payback against sci-fi star Wil ...read more Leonard is forced to ask Penny to set Howard up with one of her friends, while Sheldon seeks payback against sci-fi star Wil Wheaton. show less

S3:E6 The Cornhusker Vortex

The Big Bang Theory
11/02/2009 10:51 am EST

Leonard tries to learn about football to fit in with Penny's friends. Meanwhile, a loss in a kite war threatens to end Raj ...read more Leonard tries to learn about football to fit in with Penny's friends. Meanwhile, a loss in a kite war threatens to end Raj and Howard's friendship. show less

S3:E7 The Guitarist Amplification

The Big Bang Theory
11/09/2009 10:52 am EST

Sheldon is caught in the middle when Leonard and Penny argue about Penny's friend staying at her apartment.

S3:E8 The Adhesive Duck Deficiency

The Big Bang Theory
11/16/2009 10:53 am EST

Penny is forced to turn to Sheldon for help when she dislocates her shoulder in the bathtub. Meanwhile, the rest of the guys ...read more Penny is forced to turn to Sheldon for help when she dislocates her shoulder in the bathtub. Meanwhile, the rest of the guys accidentally get stoned in the desert while waiting for a meteor shower. show less

S3:E9 The Vengeance Formulation

The Big Bang Theory
11/23/2009 10:53 am EST

Sheldon plans revenge after Kripke humiliates him on the radio. Howard develops doubts about his relationship with Bernadette.

S3:E10 The Gorilla Experiment

The Big Bang Theory
12/07/2009 10:54 am EST

Sheldon attempts to help Penny understand physics to impress Leonard, while Howard becomes jealous when Bernadette takes an ...read more Sheldon attempts to help Penny understand physics to impress Leonard, while Howard becomes jealous when Bernadette takes an interest in Leonard's research. show less

S3:E11 The Maternal Congruence

The Big Bang Theory
12/14/2009 10:54 am EST

Leonard's mother makes a visit to his dismay and Sheldon's delight.

S3:E12 The Psychic Vortex

The Big Bang Theory
01/11/2010 10:55 am EST

Raj talks Sheldon into being his wingman at a university mixer. Leonard has trouble dealing with Penny consulting a psychic.

S3:E13 The Bozeman Reaction

The Big Bang Theory
01/18/2010 10:55 am EST

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

S3:E14 The Einstein Approximation

The Big Bang Theory
02/01/2010 10:56 am EST

Sheldon wreaks havoc when he is stumped by a difficult physics question.

S3:E15 The Large Hadron Collision

The Big Bang Theory
02/08/2010 10:56 am EST

When Leonard is offered a trip to Switzerland on Valentine's Day to visit the CERN laboratory, Sheldon uses any and all ...read more When Leonard is offered a trip to Switzerland on Valentine's Day to visit the CERN laboratory, Sheldon uses any and all means to be his guest instead of Penny. show less

S3:E16 The Excelsior Acquisition

The Big Bang Theory
03/01/2010 10:57 am EST

Sheldon misses an opportunity to get Stan Lee's autograph because he has to make an appearance in traffic court.

S3:E17 The Precious Fragmentation

The Big Bang Theory
03/08/2010 10:57 am EST

The guys' friendship is threatened when they find a ring from the "Lord of the Rings" trilogy.

S3:E18 The Pants Alternative

The Big Bang Theory
03/22/2010 10:58 am EDT

Sheldon seeks help from the rest of the gang in overcoming his fear of public speaking when he receives an award.

S3:E19 The Wheaton Recurrence

The Big Bang Theory
04/12/2010 10:58 am EDT

Sheldon takes on Wil Wheaton in a game of bowling. Leonard and Penny's relationship comes to a crossroad.

S3:E20 The Spaghetti Catalyst

The Big Bang Theory
05/03/2010 10:59 am EDT

Sheldon is forced to go behind Leonard's back to spend time with Penny following their breakup.

S3:E21 The Plimpton Stimulation

The Big Bang Theory
05/10/2010 11:00 am EDT

Chaos ensues when a nymphomaniac physicist visiting Sheldon hooks up with Leonard.

S3:E22 The Staircase Implementation

The Big Bang Theory
05/17/2010 11:00 am EDT

Leonard tells Penny about how he and Sheldon became roommates and what happened to the elevator.

S3:E23 The Lunar Excitation

The Big Bang Theory
05/24/2010 11:00 am EDT

Penny has a night of angry, drunken sex with Leonard, much to his confusion. Meanwhile, Howard and Raj search for Sheldon's ...read more Penny has a night of angry, drunken sex with Leonard, much to his confusion. Meanwhile, Howard and Raj search for Sheldon's perfect match online. show less