Look, Up in the Sky! The Amazing Story of Superman
Starring Kevin Spacey, Richard Donner, Bryan Singer, Stan Lee, Christopher Reeve, Brandon Routh, Margot Kidder, Lesley Ann Warren, Mark Hamill, Gene Simmons
It's a documentary and history movie, and has a rating of 7.8 out of 10 from Imdb which is usually fine for this kind of movie.
Watch it here
Not found streaming from Switzerland.