http://www.empireonline.com/crypticcanvas/
(I got to 31 before resorting to, um, Google search
)And here's a similar game, but with horror movies only:
http://mms.com/us/dark/dark_game.jsp
For the lazies, here are the answers:
Cryptic Canvas:
1. 300
2. Anchorman
3. Attack of the Clones /Star Wars/
4. Bolt
5. Brick
6. Children of Men
7. Chocolat
8. Cloverfield
9. Crash
10. Eagle Eye
11. Enter the Dragon
12. Flags of Our Fathers
13. Gladiator
14. Happy Feet
15. Hook
16. Ice Age
17. Interview with the Vampire
18. Iris
19. Iron Man
20. Last King of Scotland
21. Liar Liar
22. Little Children
23. Milk
24. Monsters, Inc.
25. Moulin Rouge!
26. No Country for Old Men
27. Pi
28. Pirates of the Caribbean
29. Pulp Fiction
30. Saw
31. Scream
32. Signs
33. Snakes on a Plane
34. Stardust
35. Swimming with Sharks
36. The Crow
37. The Dark Knight
38. The Diving Bell and the Butterfly
39. The English Patient
40. The Fisher King
41. The Green Mile
42. The Matrix
43. The Million Dollar Baby
44. The Pianist
45. The Thin Red Line
46. The Two Towers /The Lord of the Rings/
47. Traffic
48. Trainspotting
49. Walk the Line
50. Zodiac
Dark Game:
1. 39 Steps
2. A Clockwork Orange
3. A Nightmare on Elm Street
4. Alien
5. Beetlejuice
6. Blade
7. Blue Velvet
8. Candyman
9. Children of the Corn
10. Child's Play
11. Creature from the Black Lagoon
12. Dark Water
13. Dead Zone
14. Eraserhead
15. Friday the 13th
16. Halloween
17. House of Wax
18. Invisible Man
19. Jaws
20. Leprechaun
21. Lost Boys
22. Mummy
23. Piranha
24. Pitch Black
25. Psycho
26. Pumpkinhead
27. Rear Window
28. Rosemary's Baby
29. Saw
30. Scream
31. Seven
32. Signs
33. Silence of the Lambs
34. The Birds
35. The Butterfly Effect
36. The Crow
37. The Fly
38. The Grudge
39. The Hills Have Eyes
40. The Howling
41. The Omen
42. The Ring
43. The Shining
44. The Sixth Sense
45. The Texas Chainsaw Massacre
46. The Village
47. The War of the Worlds
48. The Wicker Man
49. Twelve Monkeys
50. Twin Peaks
