I got pretty close.  30 Horror films for the month of October.

1. Creepshow
2. Texas Chainsaw Massacre (2003)
3. Monsters vs Aliens (hey, it has Monsters in the title)
4. My Bloody Valentine 3D
5. Untraceable
6. Uninvited
7. Lady in the Water (debated on whether this was horror - should have skipped it as it is easily the worst film I've seen this month so far)
8. Carrie
9. See No Evil
10. Sympathy for Lady Vengeance
11. Halloween (2007)
12. Mirrors
13. Splinter
14. It Came From Beneath The Sea
15. Written By (not really a horror, more supernatural suspense like The Sixth Sense)
16. P2
17. Rest Stop: Dead Ahead
18. Rest Stop: Don't Look Back
19. Drag Me to Hell
20. Trick 'r Treat
21. Blood: The Last Vampire
22. Children of the Corn
23. Mortuary (What happened to Denise Crosby?!?)
24. Snakes on a Plane
25. Missing (cross between Ghost and Strip Mind)
26. Resident Evil: Degeneration
27. The Amityville Horror (1979)
28. Henry: Portrait of a Serial Killer
29. Passengers
30. Mary Shelly's Frankenstein