Here's my ballot:

1. Annie Hall, Woody Allen
2. Cries and Whispers, Ingmar Bergman
3. The Sorrow and the Pity, Marcel Ophuls
4. The Enigma of Kasper Hauser, Werner Herzog
5. The Mirror, Andrei Tarkovsky
6. Ali: Fear Eats the Soul, Rainer Werner Fassbinder
7. Manhattan, Woody Allen
8. Dersu Uzala, Akira Kurosawa
9. Vengence is Mine, Shohei Imamura
10. A Woman Under the Influence, John Cassavetes
11. Solaris, Andrei Tarkovsky
12. Aguirre, The Wrath of God, Werner Herzog
13. Chinatown, Roman Polanski
14. Pakeezah, Kamal Amrohi
15. Nashville, Robert Altman
16. The Tin Drum, Volker Schlondorff
17. Five Easy Pieces, Bob Rafelson
18. The Marriage of Maria Braun, Rainer Werner Fassbinder  
19. Stalker, Andrei Tarkovsky
20. Fox and his Friends, Rainer Werner Fassbinder
21. The Spirit of the Beehive, Victor Erice
22. Le Boucher, Claude Chabrol
23. Day for Night, Francois Truffaut
24. Amarcord, Federico Fellini
25. Bring me the Head of Alfredo Garcia, Sam Peckinpah
26. Stroszek, Werner Herzog
27. Lacombe Lucien, Louis Malle
28. The Killing of a Chinese Bookie, John Cassavetes
29. Scenes from a Marriage, Ingmar Bergman
30. That Obscure Object of Desire, Luis Buñuel