Una notte sui tetti

Groucho Marx told an anecdote - both on a '60s Today Show segment and in print - that the movie's producer asked three aspiring actresses to walk seductively past Marx. Whomever Marx decided was the best walker would play opposite him in the film. When the third girl walked past, Marx asked the producer, "How could you possibly choose anyone but that last one?" Marx had chosen Marilyn Monroe for the film.

The theatre's name changes from the Windsor to the Century and then back to the Windsor.

The DVD version released in 2004 runs 91 minutes (despite what it says on the box) and contains several scenes not included in the 85 min. version long seen in the U.S.- 1.Harpo giving link sausages to the front man in a bull costume by threading them through a nostril in the bull head and handing the back end man a ham. 2. Groucho showing photos of himself in different disguises with Madame Egilichi and then providing voice-over narration for a scene of Chico trying to bribe Mr. Lyons by setting him up with a chorus girl. 3. Harpo being put through a washing machine by Madame Egilichi's henchmen. 4. Harpo becoming completely enveloped in smoke from the KOOL sign and ducking into an air vent which sucks away the smoke. This version is also missing a scene in which Groucho observes that the show would have been saved if Maggie had accepted the sardines Harpo gave her.

Featured in The Legend of Marilyn Monroe (1965)