My list includes:
Halloween(original)
Aliens
Carrie
Seven
Nightmare on Elm Street
28 Days/Weeks Later
Dawn of The Dead(original and remake)
Creepshow
Blair Witch Project
[REC] (renamed Quarantine in the US)
The Shining
Scream
Sleepy Hollow
Excorcist(original)
Aww, its so cool to hear what everyone's tastes are when it comes to Halloween movies! I guess Disney's Legend of Sleepy Hollow and Its the Great Pumpkin Charlie Brown are considered classics. As for the slasher films, I am not a fan of them (with some exceptions). I'm more into the supernatural kind of scare.
i don't watch any scary movies. but i did watch the kiddie ones that everyone has mentioned so far, and i guess if I ever have kids under the same roof as me, I would watch them again.
I usually watch these:
Silence of the Lambs
Resident Evil 1,2 and 3
Scream
Nightmare Before Christmas
and this year i went to see Quarantine (it sucked royally).
I was really really tired (getting the stone lid of a crypt loose enough to get out and removing all those bandages is a heckova job after all). Otherwise I'd have insisted on watching Spirited Away. As it turned out, the choices we considered (but passed on) were Carnival of Souls (never seen it, but I understand it's good as a cult B movie), Invasion of the Body Snatchers (immensely great in the same genre -- but we couldn't find it), the Spanish language version of Dracula (done on the same sets as the Bela Lugosi version after hours), and Curse of the Cat People (our Ollie's choice).
But in the end we watched the 1986 version of Murders on the Rue Morgue with George C. Scott looking like he'd returned from the dead as Inspector Dupin (and still good, though not the best script he ever accepted) and a very young and hot Val Kilmer.