Season 4 Episodes

Episode Guide

The Roommate Transmogrification

Season 4, Episode 24 - Air Date: 5/19/2011
Episode Guide

The Engagement Reaction

Season 4, Episode 23 - Air Date: 5/12/2011
Episode Guide

The Wildebeest Implementation

Season 4, Episode 22 - Air Date: 5/5/2011
Episode Guide

The Agreement Dissection

Season 4, Episode 21 - Air Date: 4/28/2011
Episode Guide

The Herb Garden Germination

Season 4, Episode 20 - Air Date: 4/7/2011
Episode Guide

The Zarnecki Incursion

Season 4, Episode 19 - Air Date: 3/31/2011
Episode Guide

The Prestidigitation Approximation

Season 4, Episode 18 - Air Date: 3/10/2011
Episode Guide

The Toast Derivation

Season 4, Episode 17 - Air Date: 2/24/2011
Episode Guide

The Cohabitation Formulation

Season 4, Episode 16 - Air Date: 2/17/2011
Episode Guide

The Benefactor Factor

Season 4, Episode 15 - Air Date: 2/10/2011
Episode Guide

The Thespian Catalyst

Season 4, Episode 14 - Air Date: 2/3/2011
Episode Guide

The Love Car Displacement

Season 4, Episode 13 - Air Date: 1/20/2011
Episode Guide

The Bus Pants Utilization

Season 4, Episode 12 - Air Date: 1/6/2011
Episode Guide

The Justice League Recombination

Season 4, Episode 11 - Air Date: 12/16/2010
Episode Guide

The Alien Parasite Hypothesis

Season 4, Episode 10 - Air Date: 12/9/2010
Episode Guide

The Boyfriend Complexity

Season 4, Episode 9 - Air Date: 11/18/2010
Penny asks Leonard to lie to her father, while Howard, Raj and Bernadette pull an all-nighter at a telescope.
Episode Guide

The 21-Second Excitation

Season 4, Episode 8 - Air Date: 11/11/2010
While the guys camp in line for a long-awaited movie screening, Penny and Bernadette invite Amy (Mayim Bialik) to her first slumber party.
Episode Guide

The Apology Insufficiency

Season 4, Episode 7 - Air Date: 11/4/2010
Sheldon's answers during an FBI interview put Wolowitz's security clearance in jeopardy.
Episode Guide

The Irish Pub Formulation

Season 4, Episode 6 - Air Date: 10/28/2010
Leonard keeps an affair a secret from Sheldon, Howard and Raj.
Episode Guide

The Desperation Emanation

Season 4, Episode 5 - Air Date: 10/21/2010
Leonard realizes he’s the only one without a girlfriend, while Sheldon wants to get rid of his.
Episode Guide

The Hot Troll Deviation

Season 4, Episode 4 - Air Date: 10/14/2010
Episode Guide

The Zazzy Substitution

Season 4, Episode 3 - Air Date: 10/7/2010
The guys are concerned as Sheldon searches for an alternative to human companionship.
Episode Guide

The Cruciferous Vegetable Amplification

Season 4, Episode 2 - Air Date: 9/30/2010
Realizing he will not live long enough to download his consciousness into a robot body, Sheldon tries to extend his life span.
Episode Guide

The Robotic Manipulation

Season 4, Episode 1 - Air Date: 9/23/2010
Penny tags along on Sheldon's first ever date; Wolowitz finds a new use for a robotic arm.

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