Here you go, gnomies. These are in no particular order.
1. Nightcrawler
2. You’re Next
3. Let the Right One In
4. The Babadook
5. Oldboy
6. I Saw the Devil
7. The Machinist
8. Rosemary’s Baby
9. Pontypool
10. Ju-On: the Grudge
11. The Eye 2
12. Dragon Tattoo Trilogy
13. The Cabinet of Doctor Caligari
14. The Exorcist
15. Oculus
16. Saw
17. Scream
18. A Nightmare on Elm Street
19. Ravenous
20. Hellraiser
21. The House of the Devil
22. The Host
23. Following
24. The Others
25. Blue Velvet
Jeremy C. Shipp 
Awesome! I’ll watch them all. ALL OF THEM.
Great list! I’m proud to say I’ve seen all of them. Another one you can add is Grabbers. Drunken Irishmen battling Cthulu-type monsters.