Vizzini: Inconceivable! Give her to me. Catch up with us quickly!
Fezzik: What do I do?
Vizzini: Finish him, finish him - your way.
Fezzik: Oh, good. My way. Thank you Vizzini. Which way's my way?
Vizzini: Pick up one of those rocks, get behind the boulder. In a few minutes, the man in black will come running around the bend. The minute his head is in view, HIT IT WITH THE ROCK!
Fezzik: My way is not very sportsmanlike.
When Inigo and Westley are duelling, they are making athletic jumps. One does it after the other and when they land you can see the mat wrinkle under the "dirt" on the ground.
Mark Knopfler, who composed the music to the Princess Bride, only agreed to do so if Rob Reiner could include the baseball cap he wore in the film Spinal Tap. The director placed the cap in the boys bedroom, beside the bed.