Where is Richard Pryor?

Movie	Role
Blazing Saddles (1974)	Screenplay
See No Evil, Hear No Evil (1989)	Wallace 'Wally' Karue
Blue Collar (1978)	Ezekiel 'Zeke' Brown, Zeke Brown
Richard Pryor: Live in Concert (1979)	Self, Writer
Superman III (1983)	August 'Gus' Gorman