Have to watch a scary one every Halloween, think this year I'll finally check out Paranormal Activity. Some of the Stephen Kings turned into good films, like the Shining, It and the Stand (you must read the latter- best SK ever!!). Love the first Halloween and Friday the 13th, but slashers got old after that. Ghost Ship isn't great but has the best/freakiest mass killing of a deck full of passengers ever. Anything with kids is really scary to me, like The Ring, Children of the Corn and The Omen (threw that book across my room one night!!).
But if you haven't seen it and want some humor with your gore, I LOVE
Woody Harrelson's Zombieland. Can't recommend it enough!!