Robert Redford was apparently considered for the role of Superman in the early stages of production — a fact that got a few laughs from the crowd during the film’s premiere at Sundance, which was founded by Redford. Other A-listers who were in the running included Burt Reynolds, Paul Newman, Arnold Schwarzenegger and Neil Diamond.

Twenty years after the ‘Superman’ actor’s death, Christopher Reeve’s son has said he is overjoyed a new documentary on his father’s life is set to gain the actor a new generation of fans.