 Originally, Richard Donner (qv) had filmed Superman talking to his  father for _Superman II (1980)_ (qv), but Marlon Brando (qv) sued  for (and won) a percentage of the profits of the first film, so the  producers had his scenes removed, and they were replaced by those  with Supermans mother instead. The lawsuit also resulted in him  receiving a share of the proceeds from this movie 