Question: What role did the actor who played the role of Superman in the 1978 film "Superman" play in "Switching Channels"?
Sentence (from "Switching Channels"): It stars Kathleen Turner as Christy Colleran, Burt Reynolds as John L. Sullivan IV, Christopher Reeve as Blaine Bingham, Ned Beatty as Roy Ridnitz, Henry Gibson as Ike Roscoe, and George Newbern as Sigenthaler.
Relevant evidence: Yes