Overview
Amy finds she has sexual feelings for Penny's ex, while Koothrappali and Wolowitz try to prove who would be the better superhero.
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4 - 1The Robotic Manipulation September 23, 2010 -
4 - 2The Cruciferous Vegetable Amplification September 30, 2010 -
4 - 3The Zazzy Substitution October 07, 2010 -
4 - 4The Hot Troll Deviation October 14, 2010 -
4 - 5The Desperation Emanation October 21, 2010 -
4 - 6The Irish Pub Formulation October 28, 2010 -
4 - 7The Apology Insufficiency November 04, 2010 -
4 - 8The 21-Second Excitation November 11, 2010 -
4 - 9The Boyfriend Complexity November 18, 2010 -
4 - 10The Alien Parasite Hypothesis December 09, 2010 -
4 - 11The Justice League Recombination December 16, 2010 -
4 - 12The Bus Pants Utilization January 06, 2011 -
4 - 13The Love Car Displacement January 20, 2011 -
4 - 14The Thespian Catalyst February 03, 2011 -
4 - 15The Benefactor Factor February 10, 2011 -
4 - 16The Cohabitation Formulation February 17, 2011 -
4 - 17The Toast Derivation February 24, 2011 -
4 - 18The Prestidigitation Approximation March 10, 2011 -
4 - 19The Zarnecki Incursion March 31, 2011 -
4 - 20The Herb Garden Germination April 07, 2011 -
4 - 21The Agreement Dissection April 28, 2011 -
4 - 22The Wildebeest Implementation May 05, 2011 -
4 - 23The Engagement Reaction May 12, 2011 -
4 - 24The Roommate Transmogrification May 19, 2011