This is a hard question for me because practically all I watch are the classics, and there's just so many good ones. The Wizard of Oz, Willy Wonka and the Chocolate Factory, Mary Poppins, Grease, Barbarella, Star Wars, E.T., Citizen Kane, Gone With The Wind, A Clockwork Orange, Casablanca, The Godfather 1 and 2, The Exorcist, Forbidden Planet, All about Eve, Imitatation of life, Wuthering Heights, House of Wax, Rosemary's Baby, Breakfast at Tiffany's, Blow-up, The Long, Long Trailer, Gentleman prefer Blondes, Rebel without a cause, The Nutty Proffessor (obviously the original) The Red Shoes, Cabaret, The Ten Commandments (i'm not religious at all, but it's a damn good movie), The Good, The Bad and the Ugly-there's way too many to name! but those are a few of my favorites.