Officially, this list resides here, but since that site is unreliable, here is what's there as of 11/04.
1. Back to the Future (1985)
2. Mulholland Dr. (2001)
3. Straight Story, The (1999)
4. Three Colors: Red (1994)
5. The Passion of Joan of Arc (1928)
6. Pulp Fiction (1994)
7. Decalogue (1987)
8. Days of Heaven (1978)
9. Vertigo (1958)
10. Spirited Away (2001)
11. La Femme Nikita (1990)
12. 8 1/2 (1963)
13. L'Avventura (1960)
14. This Is Spinal Tap (1984)
15. Rebecca (1940)
16. His Girl Friday (1940)
17. Rushmore (1998)
18. Ghostbusters (1984)
19. Dr. Strangelove (1964)
20. Minority Report (2002)
Almost in the top twenty are Audition, Do the Right Thing, Lost in Translation, Batman: Mask of the Phantasm, and Collateral