Trivia: If you look closely, there are many "Mickeys" in the scenery. For example, look in the bushes in various scenes and you will see three circles that form Mickey's head.
Trivia: Although Martha Scott plays Charlton Heston's mother in this film, she was only ten years his senior.
Trivia: In the scene when Cary Grant is going up the steps to the UN, Alfred Hitchcock shot it from a rug truck across the street. He wasn't allowed to shoot the front of the UN. If you look closely, you can see a security guard in the left corner.
Trivia: Operation Petticoat was filmed at the US Naval Base in Key West Fla. They actually did paint a submarine pink. I was attending the Fleet Sonar School on the base at the time and watched with great interest. The submarine used was the U.S.S. Balao (SS-285), which was still in commission at the time.
Trivia: Not a mistake, just a fact. According to I.A.L. Diamond,Tony Curtis' "Josephine" voice was dubbed by another actor, as Curtis couldn't speak high enough.
Trivia: The dimitrodon, the dinosaur in the middle of the movie, is actually a real lizard (a basilisk, in fact) with a sail glued onto its back.
Trivia: Ava Gardner was not impressed with Melbourne which she regarded as a sleepy little backwater, but her supposed quote that it was "the perfect place to make a film about the end of the world." was a journalistic invention by a sub-editor on the Sydney Morning Herald.
Trivia: Doris Day received her only Oscar nomination for her role as Jan Morrow in this film.
Trivia: Hermione Baddeley's performance in this film is the shortest ever to be nominated for an Academy Award. She had only 2 minutes and 20 seconds of screen time.
Trivia: Anthony Quinn plays Craig Belden, the father of Rick (Earl Holliman). In real life, Quinn was only 13 years older than Holliman.
Trivia: Robert Vaughn received his only Academy Award nomination for his role as Chester A. Gwynn in this movie.
Trivia: This was the first adaptation of a Sherlock Holmes mystery to be filmed in color.
Trivia: In the cartoon's opening title credits, there is no "Layout" next to Robert Gribbroek's name, which makes him appear to be an animator.