5 of 11:
5. Mark Harmon - The actor, who plays Special Agent Jethro Gibbs on the CBS show 'NCIS,' is No. 5 on Forbes' list and reportedly earned about $15 million between May 2011 and May 2012.
(Pictured: Mark Harmon appears in a scene from a 2012 episode of 'NCIS.')
( Photo / Michael Yarish / CBS)