Gary Wayne Coleman (born February 8, 1968) is an American actor, best known for his role as Arnold Jackson in the American sitcom Diff'rent Strokes (1978–1986). He is also known for his character's catchphrase "what'chu talkin' 'bout, Willis?"

Coleman was born in Zion, Illinois on February 8, 1968. He was adopted by Willie and Sue Coleman. He suffers from a congenital kidney disease causing focal segmental glomerulosclerosis (an autoimmune destruction and alteration of the kidney), which halted his growth at an early age, leading to a small stature (4 ft 8 in; 1.42 m). He has undergone two kidney transplants, one in 1973 Read more...