Good question i don't know the number right off my head, but i'll list them and count them. My guess is probably in the 50 -60 area [*Edit - Hey, i was right*]
Here they are in no particular order:
01. Alien Quadrilogy
02. TTT Extended Edition
03. TTT Theatrical Edition
04. Chinatown
05. Memento
06. Cliffhanger
07. Independence Day
08. Stargate
09. South Park Season 3
10. South Park Season 2
11. South Park Season 1
12. LXG
13. Escape from New york SE
14. Pirates of the Carribean
15. X2
16. X-men 1.5
17. From russia with Love
18. Thunderball
19. Diamonds are Forever
20. For Your eyes Only
21. Octopussy
22. Terminator 3
23. Dumb and Dumberer
24. Hulk
25. Batman - Mystery of the Batwoman
26. Indiana Jones Trilogy
27. Matrix Reloaded
28. UHF
29. Italian Job
30. Lion King Platinum Edition
31. Beauty and the Beast Platinum Edition
32. Animatrix
33. Die another Day
34. Apocalypse Now
35. Tigerland
36. Platoon
37. Dragonheart
38. Casualties of War
39. Beatles Anthology
40. Simpsons Season 3
41. Futurama Volume 2
42. Killer Klowns from outer space
43. Black Hawk Down deluxe edition
44. Mallrats
45. Chasing Amy
46. Dogma
47. Conan the Barbarian - Collector's Edition
48. Conan The Destroyer
49. Dardevil
50. Equilibrium
51. Family Guy Volume 1
52. Family Guy Volume 2
53. Forrest gump
54. Sleepy Hollow
55. Hollow Man
56. Total Recall
57. Predator - DTS
58. Predator 2
59. Spaceballs
60. Species
61. Species 2
62. Super Troopers
63. The Thing
Man, i wish i didn't answer, now i'm depressed at how much money i spent on DVD's this year
