Trivia: When Clouseau spins the globe in his office after the first interrogation of Maria, the part calls for him to catch his hand. Peter Sellers ad-libbed a line about Africa being all over his hand. Just before the dissolve to the next scene, the actors start to grin at the ad-lib. (00:35:45)
Trivia: Yet another movie Peter Cushing and Sir Christopher Lee did together for Hammer Films. They'd previously done several Dracula movies, The Mummy, Frankenstein, and The Hound of the Baskervilles.
Trivia: Hitchcock's cameo comes five minutes into the film - he is entering from the left side of the hotel corridor after Marnie walks by.
Trivia: In addition to portraying and voicing the eponymous 7 Faces (Dr. Lao, the Abominable Snowman, Merlin, Appolonius of Tyana, The Giant Serpent, Pan, and Medusa), actor Tony Randall also appeared without makeup in a two-second cameo, as a solemn spectator in the crowd, for a total of 8 roles in the film.