Trivia: The little girl on the picture phone is director Stanley Kubrick's daughter Vivian. (00:27:50)
Trivia: The idea of helicopters was not necessarily new in WW2, but effective designs were not made until after the war; there is evidence from some literary sources (one of them being a book named "German Secret Weapons of WW2" or something like that) that the Germans did indeed conduct experiments and designs on this vehicle type.
Trivia: Vera Miles plays Madelyn Buckman, the mother of Tish Buckman (Katharine Ross). In real life, Miles is only eleven years older than Ross.
Trivia: The original Beatles did not voice themselves in the film. They only showed up at the end and they sing the songs.
Trivia: Although they play father and daughter, Kenneth Williams (The Khasi of Kalabar) was only 14 years older than Angela Douglas (Princess Jelhi).