- Heartwarming Moments: When Reggie goes to find the $250,000 stamps she'd given to her nephew, she finds a collector. Unlike everyone else in the movie, he produces them perfectly easily, explaining how he knew the boy who'd traded them had made a mistake. He gave the boy a bag of varied stamps for his collection, then later handed the more valuable stamps to Reggie over without a fuss.Stamp collector: For a few minutes, they were mine. That is enough.
- Hilarious in Hindsight:Peter Joshua: Well, here we are.Reggie Lampert: Where?Peter Joshua: On the street where you live.
- Would have been doubly so if Cary Grant has accepted Warner Bros.' offer to play Professor Higgins.
- In an earlier picture, The Bishop's Wife, Grant played an angel who gave guidance to a bishop. When he asks to check the bishop's mail, the man asks if he's expecting any; Grant replies, "Well, you never know; if I did get one, the stamp would certainly be worth saving." The line takes on a completely different connotation in the context of this film.
- Nightmare Fuel: Tex's fate. Regina finds him with his hands and feet bound to a radiator and a chair with a plastic bag over his head, obviously suffocated to death. She's more shocked at the message he left in the carpet, but the screaming expression he's making, while looking right at the camera, shows that he died in agony, unlike his other two associates.
- Spiritual Adaptation: Dubbed "The best Hitchcock film that Hitchcock never made". Lampshaded in MAD's spoof, where "Stanley Done-in" really is "Alfred Hatchplot" in disguise!
YMMV / Charade