“In The Producers (1967), the opening scene features Zero Mostel as a cheesy, second-rate producer, reduced to wooing little old ladies to get financial backing. He is playing a racy little game with one of his elderly paramours when Gene Wilder walks in on them. Gene, playing an anxious accountant prone to panic attacks, freezes and starts hyperventilating. Zero, in a soothing voice (but with an underlying subtext of menace), talks Gene out of the room. He says “oops, just say oops, back out and close the door…”