>>12434
OK, how about the Sight and Sound list? Their critics' poll from 2012 has a lot of the most popular/influential titles of the film canon, so it's a good introduction if you're just getting started.
http://www.bfi.org.uk/news/50-greatest-films-all-time
1. Vertigo (Hitchcock, 1958)
2. Citizen Kane (Welles, 1941)
3. Tokyo Story (Ozu, 1953)
4. La Règle du jeu (Renoir, 1939)
5. Sunrise: a Song for Two Humans (Murnau, 1927)
6. 2001: A Space Odyssey (Kubrick, 1968)
7. The Searchers (Ford, 1956)
8. Man with a Movie Camera (Dziga Vertov, 1929)
9. The Passion of Joan of Arc (Dreyer, 1927)
10. 8 ½ (Fellini, 1963)
11. Battleship Potemkin (Sergei Eisenstein, 1925)
12. L’Atalante (Jean Vigo, 1934)
13. Breathless (Jean-Luc Godard, 1960)
14. Apocalypse Now (Francis Ford Coppola, 1979)
15. Late Spring (Ozu Yasujiro, 1949)
16. Au hasard Balthazar (Robert Bresson, 1966)
17. Seven Samurai (Kurosawa Akira, 1954)
17. Persona (Ingmar Bergman, 1966)
19. Mirror (Andrei Tarkovsky, 1974)
19. Singin’ in the Rain (Stanley Donen & Gene Kelly, 1951)
21. L’avventura (Michelangelo Antonioni, 1960)
21. Le Mépris (Jean-Luc Godard, 1963)
21. The Godfather (Francis Ford Coppola, 1972)
24. Ordet (Carl Dreyer, 1955)
24. In the Mood for Love (Wong Kar-Wai, 2000)
26. Rashomon (Kurosawa Akira, 1950)
26. Andrei Rublev (Andrei Tarkovsky, 1966)
28. Mulholland Dr. (David Lynch, 2001)
29. Stalker (Andrei Tarkovsky, 1979)
29. Shoah (Claude Lanzmann, 1985)
31. The Godfather Part II (Francis Ford Coppola, 1974)
31. Taxi Driver (Martin Scorsese, 1976)
33. Bicycle Thieves (Vittoria De Sica, 1948)
34. The General (Buster Keaton & Clyde Bruckman, 1926)
35. Metropolis (Fritz Lang, 1927)
35. Psycho (Alfred Hitchcock, 1960)
35. Jeanne Dielman, 23 quai du Commerce 1080 Bruxelles (Chantal Akerman, 1975)
35. Sátántangó (Béla Tarr, 1994)
39. The 400 Blows (François Truffaut, 1959)
39. La dolce vita (Federico Fellini, 1960)
41. Journey to Italy (Roberto Rossellini, 1954)
42. Pather Panchali (Satyajit Ray, 1955)
42. Some Like It Hot (Billy Wilder, 1959)
42. Gertrud (Carl Dreyer, 1964)
42. Pierrot le fou (Jean-Luc Godard, 1965)
42. Play Time (Jacques Tati, 1967)
42. Close-Up (Abbas Kiarostami, 1990)
48. The Battle of Algiers (Gillo Pontecorvo, 1966)
48. Histoire(s) du cinéma (Jean-Luc Godard, 1998)
50. City Lights (Charlie Chaplin, 1931)
50. Ugetsu monogatari (Mizoguchi Kenji, 1953)
50. La Jetée (Chris Marker, 1962)