| The Big Bang Theory - S04E15 - The Benefactor Factor.avi|
Plot Summary: A wealthy donor to the university makes Leonard consider how far he's willing to go for the sake of science.
Release Date: 2011-02-10
Directors: Chuck Lorre,Bill Prady
Writers: Chuck Lorre,Bill Prady
Starcast: Johnny Galecki,Jim Parsons,Kaley Cuoco