This is so hard, there are so many and yet so many other that I haven't had the chance to see but I'm sure I would love to... But here I go...
The Exorcist (First one, really. It made me discover the wonderful world of horror movies. I love it. It's pure genious.)
Star Wars : Return of the Jedi (I'd like to bring the whole original series though...)
LOTR : Return of the King (I like returns!

really hard choice between this one and the Two Towers)
The Shining (made me discover the wonderful world of Stanley Kubrick. Another genious.)
Pan's Labyrinth (I was really really amazed by that movie. I think I'm gonna watch other movies from Guillermo del Toro)
I'm gonna cheat and add more movies I love :
V for Vendetta (once you know the plot it's less interesting though, but it was great the first time)
Night of the Living Dead (I'm serious, the first one in black and white is really nice)
C.R.A.Z.Y. (You may not have heard about it, it's a movie made in Quebec 2-3 years ago that won many international awards. Talks about a young boy discovering he's gay in the 60's-70's. There's a lot of music from that time : Pink Floyd, Supertramp, David Bowie/Ziggy Stardust. No need to say it's very good. It's also about Quebec society so it's more special for us too.)
edit : After re-reading my post I found out that I own all of those movies except V for Vendetta and Night of the Living Dead. And I have a really tiny DVD collection, I have like 10 movies. So I could almost bring my whole shelf
Edited by hog, 01 August 2007 - 04:53 PM.