"In my opinion, it wasn't putting Richard Pryor into Superman III which ruined the movie. That piece of casting wasn't terrific, but it was a terrible film even without him. It wouldn't have been any better or more successful if another actor had played his part. The perception that Pryor made it a bad picture is wrong."
-Leonard Nimoy on the inclusion of Richard Pryor in Superman III (1983), directed by Superman II's Richard Lester, while deflecting rumors that then hot comedian Eddie Murphy might acquire a role in Star Trek IV (1986), which of course never happened (Starlog Magazine #100, p.56)-