"Whatcha talkin' bout, Willis"? That is a phrase that will live on forever thanks to beloved child star, Gary Coleman, but unfortunately, Coleman will not. The "Diff'rent Strokes" actor has died at the age of 42, following an intracranial hemorrhage. Coleman's most notable role was that of Arnold Jackson on the sitcom, "Diff'rent Strokes", which aired from 1978 to 1986. Watch the video from the Associated Press below.