My Halloween playlist includes: Bach's Toccata & Fugue D Minor, "Frankenstein" The Edgar Winter Group, "Season Of The Witch" Donovan, "Superstitious" Stevie Wonder, "I Put A Spell On You" Screamin' Jay Hawkins, "Witchcraft" Frank Sinatra, "Old Devil Moon" Don Francks & Petula Clark, "Nightmare" Artie Shaw

"Werewolves of London", "Time Warp" (from Rocky Horror)

Talking Heads "Psycho Killer"

Wolf Like Me by TV on the Radio and the Goodbye, Horses song featured in Silence of the Lambs always freaks me out too...

The Monster Mash.

Monster by Kanye West (if you can find an edited one, of course)

The Monster Mash.

Making Christmas from the Nightmare before Christmas soundtrack. Here's a clip: http://www.youtube.com/watch?v=aKAxikZmY-0

Well, pretty much the whole soundtrack is awesome for Halloween. Here's the opening song, "This is Halloween," http://www.youtube.com/watch?v=xpvdAJYvofI&feature=related

Something In My House by Dead Or Alive, Walking With A Zombie by Army of Lovers, Ding Dong (The Witch Is Dead!) by Klaus Nomi, Voodoo Child by Rogue Traders, I'm Your Boogieman by White Zombie <--(the most hilarious yet groovy remake ever!)

Nothing says "Happy Halloween" like this traditional favorite. It all about trick or treat and pumpkin heads.
http://www.youtube.com/watch?v=oHg5SJYRHA0

These usually get me in the mood:

Ministry - "Halloween" http://www.youtube.com/watch?v=DXtX9u7_6F8
Bauhaus - "Bela Lugosi's Dead" http://www.youtube.com/watch?v=zq7xyjU-jsU

The soundtrack from the movie American Werewolf In London. Especially CCR's Bad Moon Rising.

From Wikipedia:
Soundtrack
The film's ironically upbeat soundtrack consists of songs which refer in some way to the moon. Bobby Vinton's slow and soothing version of "Blue Moon" plays during the opening credits, Van Morrison's "Moondance" as David and Alex make love for the first time, Creedence Clearwater Revival's "Bad Moon Rising" as David is nearing the moment of changing to the werewolf, a soft, bittersweet ballad version of "Blue Moon" by Sam Cooke during the agonizing wolf transformation and The Marcels' doo-wop version of "Blue Moon" over the end credits.[6] Landis failed to get permission to use Cat Stevens' "Moonshadow" and Bob Dylan's "Moonshiner", both artists feeling the film to be inappropriate.[citation needed] It was stated on the DVD commentary by David Naughton and Griffin Dunne that they were not sure why Landis could not get the rights to Warren Zevon's "Werewolves of London" - a song that they felt would have been more appropriate for the film.

Matchbook Romance: "Monsters"

Can't go wrong with "Monster Mash" and of course there's also "Ghostbusters" and "This Is Halloween" and "Thriller". Don't forget the Disney classics "Grim Grinning Ghosts" and "The Headless Horseman"

http://www.youtube.com/watch?v=Z-av7xd2Llk

http://www.youtube.com/watch?v=aOPeJuvLJYs