Ghost (1990) I hope this one counts. It may not be horror, but it is a thriller and a good Halloween movie. It's interesting that there was a commercial break with an ad for CaliforniaPsychics.com during this movie.
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Abandon hope all ye who enter here.
Halloween (Rob Zombie's remake)
Stay Alive
The Unborn
Jack Brooks: Monster Slayer (Not exactly top shelf but shouldnt be overlooked if you like messy monster movies)
Last House on the Left
The Haunting in Connecticut
The Midnight Meat Train (was disappointed by the ending)
Trick 'r Treat (directed by Michael Dougherty)
Vacancy
Drag Me To Hell
Cursed