In his autobiography, Tony Curtis says that he worked on the movie because they paid him $100,000, and he needed to make child support payments. He also mentions that during the production, he never saw the scenes of the movie that his character was reacting to.
Orson Welles came up with the title for this movie. He had originally agreed to play the role of the producer, but died before production began.
Although shot using 35mm film, this was the first feature length movie to have its picture and sound post production completed entirely by means of video technology. No traditional film post production methods were used. Only the final release print used 35mm film.
One of the aliens is a Boglin, which are children's toys that were popular in the late 1980s and early 1990s.
Bobby Pickett, who rose to the top of the Billboard chart with his novelty song "Monster Mash" (1962), reprises his trademark Boris Karloff impersonation in the role of the Martian Astronomer.