Miss this great movie? Inconceivable! This eminently quotable cult classic from director Rob Reiner was adapted by William Goldman from his 1973 novel of the same name and beautifully subverts fairy tale lore in a rollicking tongue-in-cheek fantasy adventure that's laugh-out-loud funny. A grandfather (Peter Falk) tells a story to his sick grandson (Fred Savage) about a farmhand named Westley (Cary Elwes) who must rescue his true love Princess Buttercup (Robin Wright) from the odious Prince Humperdinck (Chris Sarandon). The swashbuckling yarn also stars Mandy Patinkin, Wallace Shawn, André the Giant, Christopher Guest and Billy Crystal.