Might be hard for some people to do this, but embrace the challenge.
I excluded comedies, animated films and documentaries to make this easier for me.
1. Goodfellas
2. There Will Be Blood
3. 4 Months, 3 Weeks, 2 Days
4. Inglorious Basterds
5. American History X
6. No Country for Old Men
7. Reservoir Dogs
8. The Assassination of Jesse James by the Coward Robert Ford
9. The Departed
10. City of God
11. Mystic River
12. The Shawshank Redemption
13. Beasts of the Southern Wild
14. The Green Mile
15. Der Untergang
16. The Usual Suspects
17. Blood Diamond
18. The Prestige
19. Un Prophete
20. The Silence of the Lambs
21. Casino
22. Catch Me if You Can
23. V for Vendetta
24. The Warriors
25. Saving Private Ryan
26. Titanic
27. The Town
28. Lincoln
29. Avatar
30. In the Name of the Father
31. 12 Angry Men
32. Pulp Fiction
33. Fargo
34. American Beauty
35. Snatch
36. Training Day
37. Gangs of New York
38. A Better Life
39. District 9
40. Moon
41. The Girl With the Dragon Tattoo (Swedish)
42. Eastern Promises
43. Django Unchained
44. The Godfather 1+2
45. A History of Violence
46. 28 Days Later
47. Michael Clayton
48. The Hurt Locker
49. Traffic
50. The Fighter
I excluded comedies, animated films and documentaries to make this easier for me.
1. Goodfellas
2. There Will Be Blood
3. 4 Months, 3 Weeks, 2 Days
4. Inglorious Basterds
5. American History X
6. No Country for Old Men
7. Reservoir Dogs
8. The Assassination of Jesse James by the Coward Robert Ford
9. The Departed
10. City of God
11. Mystic River
12. The Shawshank Redemption
13. Beasts of the Southern Wild
14. The Green Mile
15. Der Untergang
16. The Usual Suspects
17. Blood Diamond
18. The Prestige
19. Un Prophete
20. The Silence of the Lambs
21. Casino
22. Catch Me if You Can
23. V for Vendetta
24. The Warriors
25. Saving Private Ryan
26. Titanic
27. The Town
28. Lincoln
29. Avatar
30. In the Name of the Father
31. 12 Angry Men
32. Pulp Fiction
33. Fargo
34. American Beauty
35. Snatch
36. Training Day
37. Gangs of New York
38. A Better Life
39. District 9
40. Moon
41. The Girl With the Dragon Tattoo (Swedish)
42. Eastern Promises
43. Django Unchained
44. The Godfather 1+2
45. A History of Violence
46. 28 Days Later
47. Michael Clayton
48. The Hurt Locker
49. Traffic
50. The Fighter