The Big Bang Theory - Season 4

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).

• S4 E1 - The Robotic Manipulation

• S4 E2 - The Cruciferous Vegetable Amplification

• S4 E3 - The Zazzy Substitution

• S4 E4 - The Hot Troll Deviation

• S4 E5 - The Desperation Emanation

• S4 E6 - The Irish Pub Formulation

• S4 E7 - The Apology Insufficiency

• S4 E8 - The 21-Second Excitation

• S4 E9 - The Boyfriend Complexity

• S4 E10 - The Alien Parasite Hypothesis

• S4 E11 - The Justice League Recombination

• S4 E12 - The Bus Pants Utilization

• S4 E13 - The Love Car Displacement

• S4 E14 - The Thespian Catalyst

• S4 E15 - The Benefactor Factor

• S4 E16 - The Cohabitation Formulation

• S4 E17 - The Toast Derivation

• S4 E18 - The Prestidigitation Approximation

• S4 E19 - The Zarnecki Incursion

• S4 E20 - The Herb Garden Germination

Show all 24 episodes