This is the list I submitted, it's slightly different from what I posted earlier:

1. Alfred Hitchcock

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2. John Ford

3. Howard Hawks

4. Yasujiro Ozu

5. Michael Powell & Emeric Pressburger

6. Orson Welles

7. FW Murnau

8. Akira Kurosawa

9. Wong Kar-wai

10. Eric Rohmer

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11. Jean-Luc Godard

12. Terrence Malick

13. Josef von Sternberg

14. Jean Renoir

15. Roberto Rossellini

16. Jacques Tati

17. Buster Keaton

18. Hou Hsiao-hsien

19. Nicholas Ray

20. Vincente Minnelli

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21. Charles Chaplin

22. Wes Anderson

23. Samuel Fuller

24. Ernst Lubitsch

25. Alain Resnais

26. Jim Jarmusch

27. Anthony Mann

28. Leo McCarey

29. Raoul Walsh

30. Frank Borzage

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31. Fritz Lang

32. Martin Scorsese

33. Robert Bresson

34. Woody Allen

35. Carl Theodor Dreyer

36. Joel & Ethan Coen

37. Otto Preminger

38. Quentin Tarantino

39. Douglas Sirk

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40. Johnnie To

41. Jacques Demy

42. Stanley Kubrick

43. King Vidor

44. Luis Bunuel

45. Michelangelo Antonioni

46. DW Griffith

47. George Cukor

48. Kryzstof Kieslowski

49. John Woo

50. Michael Curtiz