Gary Wayne Coleman ( February 8 , 1968 - May 28 , 2010 ) was an American actor , known for his childhood role as Arnold Jackson in the American sitcom Diff ` rent Strokes ( 1978-1986 ) and for his small stature as an adult .
Gary Wayne Coleman ( February 8 , 1968 - May 28 , 2010 ) was an American actor .