- This tribute to 'Hitchcock, Alfred' contains references to more than 10 of his films: see the links to other titles. Hitchcock sent director 'Brooks, Mel' a "good luck" bottle of champagne during production.
- The bird droppings were actually mayonnaise and chopped spinach.
- The appearance of Albert Whitlock as Arthur Brisbane is yet another of the film's many homages to 'Hitchcock, Alfred' ; Whitlock was Hitchcock's special-effects man on several films.
- In another Hitchcock reference, the location where Dr. Thorndyke is attacked in the phone booth beneath the Golden Gate Bridge is Fort Point, where the crucial water rescue scene takes place in Vertigo (1958).
- Gene Wilder was originally considered for the part of Dr. Richard Thorndyke, but scheduling forced Wilder to turn the role down.
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