'Diff'rent Strokes' actor was in a coma after a fall on Wednesday.By Gil Kaufman Gary Coleman Photo: Ron Galella/WireImage Sitcom actor and tabloid staple Gary Coleman, 42, died on Friday (May 28) at 12:05 p.m. (Mountain Time), after slipping into a critical condition on Thursday following an earlier fall in which he hit his head. The actor, whose congenital kidney disease halted his childhood growth at an early age, had suffered a series of health setbacks in recent years.