Trivia: Barry Bostwick and Susan Sarandon actually were a couple at the time the film was made. 20th Century Fox wanted some Americans cast in the British production which is why they were hired. (Source: The Guardian).
Trivia: The iconic song "The Time Warp" was not in the original production of the show. It was added to pad out the the 40 minute play to feature film length, along with allowing a dance number to be added to the film. (Source: The Guardian).
Answer: The first line to the lyrics of 'Science Fiction/Double Feature' is "Michael Rennie was ill The Day the Earth Stood Still, but he told us where we stand." That line is a reference to the 1951 film classic 'The Day the Earth Stood Still', which stars Michael Rennie as Klaatu, the alien from outer-space, who is shot at the start of the film when he tries to convey a dire message of goodwill to the humans. The rest of the song lyrics refer to other science fiction films including 'The Invisible Man' starring Claude Rains, 'King Kong' starring Fay Wray, and 'Tarantula' starring Leo G. Carroll.
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