There is no accounting for taste but in rough order here are some films that made a lasting impression on me:

1. Citizen Kane (Orson Wells, 1941)

2. The Battleship Potemkin (Eisenstein, Russian, 1925, silent)

3. La Strada (Fellini, Italian, 1954)

4. Bicycle Thieves (De Sica, Italian, 1948)

5. Roshoman (Kurosawa, Japan, 1950)

6. The Seventh Seal (Bergman, Sweden, 1956)

7. Pulp Fiction (Tarantino, 1994)

8. The Last Picture Show (Bodanovich, 1971)

9. The Deer Hunter (Cimino, 1978)

10. The Grapes of Wrath (Ford, 1940) Tie

10. Raging Bull (Scorcese, 1980)Tie