I believe that he was a writer on "Good Times" long before "The Incredible Hulk." I also believe that is where he became friends with David Letterman (yes, that David Letterman), who was his best man at his wedding and is the godfather of his son.

The imdb credits overlooked "The Richard Pryor Show" where he played a reporter. John said he & Rich were mad cool and Rich would come to his shows.
John also was an early Black male model. And he said he was in a film with Sofia Lauren.