The Big Bang Theory - Season 4
Physicists Leonard and Sheldon find their nerd-centric social circle with pals Howard and Raj expanding when aspiring actress Penny moves in next door.
First Air Date : Sep 24, 2007
Last Air Date : May 16, 2019
Runtime : 22 min.
Genre : Comedy
Stars : Johnny Galecki, Jim Parsons, Kaley Cuoco, Simon Helberg, Kunal Nayyar, Melissa Rauch, Mayim Bialik
Quality : 
- Eps. 1 : The Robotic Manipulation2010-09-23
- Eps. 3 : The Zazzy Substitution2010-10-07
- Eps. 4 : The Hot Troll Deviation2010-10-14
- Eps. 5 : The Desperation Emanation2010-10-21
- Eps. 6 : The Irish Pub Formulation2010-10-28
- Eps. 7 : The Apology Insufficiency2010-11-04
- Eps. 8 : The 21-Second Excitation2010-11-11
- Eps. 9 : The Boyfriend Complexity2010-11-18
- Eps. 10 : The Alien Parasite Hypothesis2010-12-09
- Eps. 12 : The Bus Pants Utilization2011-01-06
- Eps. 13 : The Love Car Displacement2011-01-20
- Eps. 14 : The Thespian Catalyst2011-02-03
- Eps. 15 : The Benefactor Factor2011-02-10
- Eps. 16 : The Cohabitation Formulation2011-02-17
- Eps. 17 : The Toast Derivation2011-02-24
- Eps. 19 : The Zarnecki Incursion2011-03-31
- Eps. 20 : The Herb Garden Germination2011-04-07
- Eps. 21 : The Agreement Dissection2011-04-28
- Eps. 22 : The Wildebeest Implementation2011-05-05
- Eps. 23 : The Engagement Reaction2011-05-12
