During his interview, Richard Pryor said that he was looking forward to seeing Superman II (1980) and that he wanted to be in a "Superman" film. Although he later claimed that he was joking, this comment nevertheless led to him being cast as Gus Gorman in Superman III (1983).
Richard Pryor and Johnny Carson died months apart in 2005. Ed McMahon died a year and a day after George Carlin (June 22, 2008; June 23, 2009.)