What role did a star in the 1982 movie Fighting Back play in "The Cosby Show?"
Fighting Back (1982 American film):  The film stars Tom Skerritt, Patti LuPone, Michael Sarrazin, Yaphet Kotto, David Rasche, Lewis Van Bergen, Earle Hyman, and Ted Ross. Earle Hyman:  He also appeared on "The Cosby Show" as Cliff's father, Russell Huxtable.
Cliff's father, Russell Huxtable