On-location Metropolis footage was, for the first time, shot not primarily in New York City, but in Calgary, Alberta, Canada. As drunk Superman flies off, look at the Canadian train go by below him.
The Superman "video game" screen that Webster used to shoot missiles at Superman was based on an Atari Superman game. (Unfortunately, by 1983, Atari was beginning to lose its early grip on the video game industry and neither the Superman game nor the upgrade Atari system it was created for, were great successes.)
According to the writers, the original choice to play Ross Webster was Alan Alda. They wanted an actor who could be ruthless without losing any charm.
The sound effects playing during the video game display when Superman is attacked by the computer's missile defense system are from the Atari 2600 home video game version of Pac-Man.
When movies are made, scenes are often
left on the cutting room floor.
Sometimes, there will be several versions
of a movie floating about on cable, tv or video etc. Other times, a Director may
release a special cut of the movie.
The additional TV footage did not add much to the story. Superman rescues a little boy stuck in a tree after saving the drowning man at the beginning of the film (the boy was catapulted by the see-saw he was sitting on when the bank robber's bag of money accidentally fell on the other side of the teeter totter). One assumes the scene was cut mainly due to the obvious English accent that the boy's mother had when she thanked Superman.