Fargo is great but I've watched it too many times and I'm sick of it now, lol
The Terminator blew my mind when I was 14, probably the most intense movie experience I can remember, along with Raiders of the Lost Ark
I've also watched South Park: Bigger, Longer, Uncut and Mulholland Drive on several occasions
The most gut-busting hilarious movie I've ever seen is Team America: World Police
Oh, and Goodfellas was pretty sweet
I'm not ashamed of Back to the Future either. Good clean 80's fun! Same with Who Framed Roger Rabbit? I love them both.