Duration: 22m

TV-PG 8.4 Comedy / Romance

The Big Bang Theory S3E10

Sheldon attempts to help Penny understand physics to impress Leonard, while Howard becomes jealous when Bernadette takes an interest in Leonard's research.

Release Date: December 7, 2009 (USA)

Creator: Chuck Lorre, Bill Prady

Cast: Johnny Galecki, Jim Parsons, Kaley Cuoco, Simon Helberg, Kunal Nayyar, Melissa Rauch, Mayim Bialik, Kevin Sussman, Bob Newhart