Here are my top 46:

1. Psycho ( Original).
2. The Shining.
3. The Exorcist.
4. Night of the Living Dead (1968).
5. Dawn of the Dead ( 1978).
6. Evil Dead 1 & 2.
7. Re-Animator.
8. Dead Alive ( a.k.a. Braindead).
9. From Dusk Till Dawn.
10. Day of the Dead.
11. Zombie.
12. Frankenstein ( 1931).
13. Dracula ( 1931).
14. City of the Living Dead ( a.k.a. Gates of Hell).
15. House By The Cemetery.
16. Maniac ( 1980).
17. Poltergeist.
18. American Werewolf in London.
19. The Beyond.
20. The Others.
21. Final Destination 1 & 2.
22. The Wolf Man.
23. Urban Legend.
24. Return of the Living Dead 1 & 3.
25. Nightmare City ( a.k.a. City of the Walking Dead). ( The one movie that started running zombies)
26. Saw.
27. Dawn of the Dead ( 2004).
28. Scanners.
29. Scream.
30. Halloween 1 & 2.
31. Hellraiser 1 & 2.
32. Vampire Hunter D ( 1985) and Bloodlust.
33. Silence of the Lambs.
34. Perfect Blue.
35. Suspiria.
36. Tenebre.
37. Inferno.
38. Se7en.
39. Jaws.
40. Blade 1 & 2.
41. Land of the Dead.
42. Shaun of the Dead.
43. Nightmare on Elm Street 1 & 3.
44. Friday The 13th parts 1, 3, 4, and Jason Lives.
45. Freddy vs. Jason.
46. Cannibal Holocaust.

Airplane!

That's a comedy.

Dude! OK, 3 items to bring up.

1) Such an arbitrary number to settle on - 46.

2) Even though you've basically exhausted the list on the classics - still happy to see some forgotten/cult ones there ('City of the Living Dead' - still ridiculously gory and scary). But, what? No, 'Fright Night?'

3) My personal fave (obviously from the 80s; obviously impossible to find) is the Grace Jones (?)classic, 'Vamp'.

My list is all notable horror movies in the past 20 years I can remember.... hmmm oddly enough it comes to 46.... but if I were to take the top five

1. exorcist
2. Aliens (if that counts)
3. From Beyond
4. American Werewolf in London
5. the Thing

Also mentionable:

Event horizon
Videodrome
The Omen
The Twilight Zone

TOP 46!!?? Why stop there?

here here on American Werewolf in London. Michael Landon in Werewore(teenage)

the only thing my feeble intellect could possible add is ...

Blair Witch Project

Which (not a witch, which is a play on words Iguess) was ALL the last 10 minutes.

http://www.amazon.com/exec/obidos/tg/detail/-/B00005KHJL/002-0966969-8130403?v=glance

Ho-lee Shit! 'Vamp' on DVD! Awlright Dedee Pfeiffer here I come! (no pun intended)

i love watching the omen around halloween time same with some of the 70's hammer films

Vamp was alot of fun, it did inspired "From Dusk Till Dawn".

Showgirls and any film with Vin Diesel.

scary.

Let's not forget the newest talent for horror-film.
Mr.Zombie's "House of 1000 Corpses". and(sorry tOdd,
i read your review of the "Rejects" but disagree, maybe you should see pt.1)yes it would be Super-Horriffic-Terrrifffied-Terrrifffic 2C
1000corpses & TheDevilsRejects
back2back this halloween.
I'll do a quick check 2C it's DVD release date.

nnnnooooo!looks like ain't happenin' this time 'round.

Mine would be

TENEBRAE - DARIO ARGENTO
THE BEYOND - LUCIO FULCI
FRIGHT NIGHT
THE THING - JOHN CARPENTER

Clueless

I did scream most of the way through Howard the Duck [especially during the kiss) but maybe that doesn't count.

Scream [the first one] I think is notable...

I would also say "Ghostbusters" [the first one] and "Tremors" [the first one] because apparently I like comedy with my monsters...

Hey, a movie starting with Kevin Bacon peeing and a 50 story marshmellow man can't be wrong!

Shrek!