The Big Bang Theory: Season 4 Episode 11: The Justice League Recombination
Starring: Johnny Galecki, Jim Parsons, Kaley Cuoco, Simon Helberg, Kunal Nayyar, Carol Ann Susi
Length: 20 minutes
On Air Date: 16 Dec 2010
The Big Bang Theory: S04E11 Description: The guys enter a costume contest as members of the Justice League and convince Penny and Zack to join them.