Synopsis
This season the Big Bang gang’s romantic universe expands. On the rebound from Penny, Leonard falls into the arms of Raj’s sister Priya. Sheldon gets a girlfriend, or rather a friend who is a girl: Amy, a dour neurobiologist who declares herself besties with Penny. Howard and Bernadette heat up. And so do Raj and Bernadette (at least in Raj’s Bollywood daydream).
Season 4 aired between 23 Sep 2010 and 19 May 2011, 24 episodes.
Episodes
E01
The Robotic Manipulation
23 Sep 2010
E02
The Cruciferous Vegetable Amplification
30 Sep 2010
E03
The Zazzy Substitution
07 Oct 2010
E04
The Hot Troll Deviation
14 Oct 2010
E05
The Desperation Emanation
21 Oct 2010
E06
The Irish Pub Formulation
28 Oct 2010
E07
The Apology Insufficiency
04 Nov 2010
E08
The 21-Second Excitation
11 Nov 2010
E09
The Boyfriend Complexity
18 Nov 2010
E10
The Alien Parasite Hypothesis
09 Dec 2010
E11
The Justice League Recombination
16 Dec 2010
E12
The Bus Pants Utilization
06 Jan 2011
E13
The Love Car Displacement
20 Jan 2011
E14
The Thespian Catalyst
03 Feb 2011
E15
The Benefactor Factor
10 Feb 2011
E16
The Cohabitation Formulation
17 Feb 2011
E17
The Toast Derivation
24 Feb 2011
E18
The Prestidigitation Approximation
10 Mar 2011
E19
The Zarnecki Incursion
31 Mar 2011
E20
The Herb Garden Germination
07 Apr 2011
E21
The Agreement Dissection
28 Apr 2011
E22
The Wildebeest Implementation
05 May 2011
E23
The Engagement Reaction
12 May 2011
E24
The Roommate Transmogrification
19 May 2011