All right, time for da '90s! It was a total pain in the ass to locate as many as ten movies which are not only good but great - okay, maybe not great, I lowered my expectations a bit. xD Sooo~
1. In the Mouth of Madness
Sam Neill in a horror movie - standard enough, with above-standard execution! Great atmospheric and creepy-cool flick with some very Lovecraftian elements, as Bear already mentioned. Probably my absolute favorite '90s horror film.
2. From Dusk till Dawn
An unusual beast, it starts out as a crime-thriller, then kind of turns into a horrorfest with some funny gags. Robert Rodriguez is always good in the "high-budget B-movie" type department, as evident here.
3. Misery
Excellent (dare I say one of the best) Stephen King adaptation, almost solely depending on the talents of James Caan and Kathy Bates. Needless to say, their acting is superb, especially Kathy doing the demented ex-nurse.
4. Jacob’s Ladder
Totally creepy and surreal nightmare-like flick where reality and visions blur together (or do they? dun-dun-duuun). 'Nuff said, fans of weird mindfuck movies must see this one.
5. Braindead
A true horror-comedy classic, very crazy, very gross and lots of fun... back when Peter Jackson wasn't busy chasing hobbits and elves, heh.
6. Scream
A nice homage / critique / meta-look at the slasher subgenre, through a kind of teen-horror type setting. I chose this more for the sheer nostalgic value it holds for me, saw this when I was like 12.
7. Audition
One of those "....oh shit" movies, haha. If you've seen it you know what I mean, if not - go see it right now! An unsettling ride, that's for sure.
8. Event Horizon
Another solid horror with Sam Neill, this time with a good deal of sci-fi thrown in. To me, the interior and horrors of the titular ship almost rival Giger's fantastically otherworldly designs for Alien.
9. Army of Darkness
This is the part where I'm just rounding out my list to have 10 movies. xD This is an okay movie, quite hilarious, not scary at all but that probably wasn't the point to begin with.
10. Hellraiser: Bloodline
Probably the most decent Hellraiser movie after the first two. The ones after this were surprisingly enjoyable too actually (except for the horrific remake).