Ben —, actor who portrayed George Coulouris in 2008 comedy-drama film Me and Orson Welles (7)

I believe the answer is:
chaplin
(Other definitions for chaplin that I've seen before include "Comedian who wore baggy pants and bowler hat" , "English silent comedy actor, d. 1977" , "Charles, early film actor and director" , "Charlie ---, film comedian" , "Charles, film star and director" .)