The Big Bang Theory: Season 4 Episode 7: The Apology Insufficiency
Starring: Johnny Galecki, Jim Parsons, Kaley Cuoco, Simon Helberg, Kunal Nayyar, Neil deGrasse Tyson
Length: 25 minutes
On Air Date: 28 Dec 2010
The Big Bang Theory: S04E07 Description: An FBI agent interviews the guys when Howard needs to obtain a security clearance.