Sight & Sound has been doing an international critics poll every ten years since 1952. The latest list (from 2002), which can be found
here, shakes out like this (this is the list, in order, of all movies which received more than four votes):
1. Citizen Kane (Welles)
2. Vertigo (Hitchcock)
3. La Régle du jeu (Renoir)
4. The Godfather and The Godfather Part II (Coppola)
5. Tokyo Story (Ozu)
6. 2001: A Space Odyssey (Kubrick)
7. Battleship Potemkin (Eisenstein)
7. Sunrise (Murnau)
9. 8 1/2 (Fellini)
10. Singin' in the Rain (Kelly, Donen)
11. Seven Samurai (Kurosawa)
11. The Searchers (Ford)
13. Rashomon (Kurosawa)
14. The Passion of Joan of Arc (Dreyer)
15. A bout de souffle (Godard)
15. L'Atalante (Vigo)
15. The General (Keaton)
15. Touch of Evil (Welles)
19. Au hasard Balthazar (Bresson)
19. Jules et Jim (Truffaut)
19. L'avventura (Antonioni)
22. Le Mépris (Godard)
22. Pather Panchali (Ray)
24. La dolce vita (Fellini)
24. M (Lang)
24. The Story of the Late Chrysanthemums (Mizoguchi)
27. Barry Lyndon (Kubrick)
27. Les Enfants du paradis (Carné)
27. Ivan the Terrible (Eisenstein)
27. Man with a Movie Camera (Vertov)
27. Metropolis (Lang)
27. Some Like It Hot (Wilder)
27. Ugetsu Monogatari (Mizoguchi)
27. Wild Strawberries (Bergman)
35. Andrei Roublev (Tarkovsky)
35. The 400 Blows (Truffaut)
35. Fanny and Alexander (Bergman)
35. La Grande Illusion (Renoir)
35. The Magnificent Ambersons (Welles)
35. Modern Times (Chaplin)
35. Psycho (Hitchcock)
35. The Seventh Seal (Bergman)
35. Taxi Driver (Scorsese)
35. The Third Man (Reed)
45. Bicycle Thieves (De Sica)
45. Blade Runner (Scott)
45. City Lights (Chaplin)
45. Greed (von Stroheim)
45. Intolerance (Griffith)
45. Lawrence of Arabia (Lean)
45. Letter from an Unknown Woman (Ophuls)
45. The Man Who Shot Liberty Valance (Ford)
45. Mirror (Tarkovsky)
45. Ordet (Dreyer)
45. Pierrot le fou (Godard)
45. Rio Bravo (Hawks)
45. Sansho Dayu (Mizoguchi)
45. Shoah (Lanzmann)
45. The Travelling Players (Angelopoulos)
45. Two or Three Things I Know about Her (Godard)