Here's the official guide and promotional photos of The Big Bang Theory season 6 episode 20 "The Tenure Turbulence". This episode airs on Thursday, April 4 on ABC.
LEONARD, SHELDON AND RAJ BATTLE FOR TENURE AT THE UNIVERSITY --
Regina King Returns as Mrs. Davis
- Leonard, Sheldon and Raj fight for tenure at the University, and the competition heats up when the girls get involved.