Is "The Nightmare Before Christmas" a Halloween movie? Is it a Christmas movie? It seems like an appropriate watch anytime between October and the end of the year, I guess that is why Disneyland re-themes The Haunted Mansion to it for a full quarter of the year.
The film is full of classic songs (I guess that makes it another musical I do like), but I would say that none is better for a Halloween soundtrack than this one. It's creepy, catchy, and really one of the few songs that have appeared, or will appear, on this list that is really, truly a Halloween song.
And of course I have to throw in a dubstep version:
