The six-fingered man, when Westley tells Buttercup that he thinks that the Fire Swamp is actually lovely, Humperdink complaining about how full his plate is, with his country's anniversary to plan, a war to start, murdering his fiancee, etc.

And, as Apple mentioned, the scene with Billy Crystal and Carol Kane. "...A nice MLT...", and when she chases him around, saying Humperdink's name over and over again.