Visible crew/equipment: When Groucho enters the rehearsal area, the shadow of the camera is visible behind him.
A Night at the Opera (1935)
1 visible crew/equipment mistake - chronological order
Directed by: Sam Wood, Edmund Goulding
Starring: Chico Marx, Groucho Marx, Harpo Marx, Kitty Carlisle
Deliberate mistake: Riccardo is a stowaway on the ship, but he was standing on the dock when it pulled away.
Otis B. Driftwood: Signor Lassparri comes from a very famous family. His mother was a well-known bass singer. His father was the first man to stuff spaghetti with bicarbonate of soda, thus causing and curing indigestion at the same time.