The Good, The Bad, and The Ugly: Horror Movies

I popped over to Teen Word Factory to check out the post on Horror movies (how could I resist)!

When I was younger, my favorite scary movie was The Blob. The idea of a creature that could pretty much get to you no matter what (under the door crack, up through the drainpipe) was heart-stopping. To this day, I don't like to look at the gap under a door.

Now my favorite horror movies are the Alien series (I know--technically sci-fi) and John Carpenter's remake of The Thing (when that blood screamed, I screamed right along with it).

I haven't been too pleased with some of the more current horror movies. For example, I waited YEARS for Stephen King's The Mist become a movie, and was fairly pleased with the result . . . until the ending. The new ending ruined the whole thing for me.

But I do like:
Pitch Black (sci-fi, I know; but if it involves non-technological scary monsters, it's horror to me);
28 days/weeks later;
Resident Evil;
and I also enjoyed Sweeney Todd, Sleepy Hollow, and Zombieland, though I count them more as black comedy than horror.

What are your favorites, and which ones do you wish you'd never seen?