- Advertised Extra: Dan Aykroyd gets second billing but only appears in the Kansas portions.
- Billing Displacement: The poster on the main page accurately reflects the characters' importance. But this one◊ has Frank and the sheriff front and centre, despite them not being main characters.
- California Doubling: Montreal doubled for New Jersey, with the result that some road signs in French had to be covered over. Clarenceville doubled for Kansas.
- Directed by Cast Member: Bob Hoskins directed the film and played Frank.
- Fake American: British Bob Hoskins as Frank. As the movie was filmed in Canada, most of the American characters were played by Canadians.
- No Export for You: The film never got an official USA release, due to issues with the rights.
- Production Posse: Bob Hoskins had worked with producer David L Snyder and actress Terri Finn on Super Mario Bros..
- Technology Marches On: The Applied Phlebotinum of tracking the rainbow landing site comes from a time when people still knew very little about computers.
- Unintentional Period Piece: Defied to an extent. The costume designer avoided dressing the characters in the fashions of the day to avoid dating the film to the 90s.
- Keep Circulating the Tapes: The band's last album Stranger in Us All has never seen a re-release and has also never been made available on iTunes, making it surprisingly hard to find in lossless quality.
- What Could Have Been...: Hipgnosis' cover artwork◊ for Difficult to Cure was originally designed for Black Sabbath's Never Say Die!, but it was rejected.
The TV show:
- Keep Circulating the Tapes: To celebrate its 30th anniversary, six episodes were released on DVD. Apart from a few other compilation DVDs from the same company that featured other shows, for a while there weren't many Rainbow episodes available to see, apart from taped episodes by viewers at the time of airing on video sites. However, there is now an official Rainbow channel on Youtube which has been uploading episodes, including the entirety of the rarely-seen first series.
- Talking to Himself: Roy Skelton voices both Zippy and George.
- What Could Have Been...: According to Word of God, Zippy was originally going to have a mother and father, who had zip compartments in their side and stomach respectively. However, only Zippy made the final cut.