Trying to do it in order (though it's sometimes hard to decide):

10. L'emploi du temps
9. Atonement
8. In Bruges
7. 2001: A Space Odyssey
6. Happiness
5. There Will Be Blood
4. No Country for Old Men
3. The Grudge
2. Pulp Fiction
1. The Ring

10. Legends of the Fall
9. Enemy at the Gates
8. JFK
7. Fight Club
6. Ravenous
5. Das Boot
4. Mononoke Hime
3. Road to Perdition
2. Star Wars:IV a New Hope
1. Arlington Road

Honorable Mention : Ninja Scroll, The Rock, American History X, Cold Mountain

Kill Bill
Sleepy Hollow
Euro Trip
Terminator 3
Mr & Mrs Smith
life or something like it
transformers
dawn of the dead
scary movie
The Truman Show

Spiderman
Titanic
Pan't labyrinth
war of the worlds
Shrek
wall-e

and others I can't think of at the moment...

^^ from what I saw of Arlington road (1st half i think) it was pretty dam good, the start was pretty freaky! and the plot changed as fast as a new simpsons episode after that... in a good way.

1 Girl eats girl
2 girl squirts
3 sex with the stars
4 1 on 1
5 7 on 7
6 wild things
7 wild thing 2
8 stop masterbating
9 wet pussy
10 star was episode 2