Gary Coleman was an American actor who was best known for playing the role of Arnold Jackson in the sitcom Diffrent Strokes (1978–1986) . He became famous for his characters catchphrase "Whatchu talkin bout, Willis?", which he uttered skeptically in response to statements by his brother Willis, who was portrayed by Todd Bridges. Colemans stardom resulted in several roles thereafter, including his film debut On the Right Track (1981), the comedies Jimmy the Kid and The Kid with the Broken Halo (both released in 1982), the cult film Dirty Work (1998), the satirical-comedy film An American Carol (2008) and the independent film Midgets vs. Mascots (2009) .
According to Bridges autobiography Killing Willis, Coleman was forced to work long hours on the set of Diffrent Strokes despite his age and debilitating health problems, which contributed to him feeling depressed and withdrawn from the rest of the cast. A Biography Channel documentary estimated that Coleman was left with a quarter of the original amount of money he received from his work on Diffrent Strokes.
