A couple of years ago, I attended a Q-&-A at a Comic-Con with Jack O'Halloran (who played Non in the first two Superman movies) as one of the special guests, and he mentioned that Richard Donner (RIP) could have made six Superman movies.
For the first time in 1978 the pages of a comic came to life, as a 5 or 6 year old boy by the end of the movie I truly believed in "Truth, justice and the American way".
I was born in the 90’s and was introduced to Superman: The Movie in 2000 and thats when I was introduced to this character through this movie, I extremely enjoyed it and ever since became a huge Superman Fan!
They should do a show about the making of this incredible movie. They could do it in the same style as "The Offer", but better. Heck, they could even get the same actors that played Mario Puzo and Marlon Brando from that series.