Trivia: When Count Rugen knocks Westley out to put him in the Pit of Despair, Cary Elwes wanted the scene done properly, so he told Chris Guest to hit him for real with the sword butt. Guest did, and accidentally hit him hard enough that production had to be shut down for a day while Elwes was taken to the hospital.
Trivia: The storming of the castle was the first scene filmed. According to Cary Elwes, after Westley wakes up, Andre the Giant proceeded to let out a loud and drawn-out fart, much to the shock and disgust of the entire cast and crew. Elwes said he learned from Hulk Hogan that Andre the Giant had a habit of "breaking the ice by breaking the wind."