Reeker
The plot couldn't possibly have been less original: five young adults get stranded in the middle of nowhere and spend the night in a deserted motel where they get slaughtered one by one. And unless you haven't seen more than five horror movies in your life, the ending was totally predictable. But still this really isn't a bad movie. Great camera work, nice location, decent actors and some good dark humor.
The Attic
This movie reminded me why I have a soft spot for bad low-budget horror movies. The really bad ones are often just as enjoyable as the good ones and this was a really bad one (although really not as bad as the 3.6 on IMDb suggests). The main character is a complete b**** so you really don't care if she dies or not and the rest of the cast just seems confused and unsure which emotions they're supposed to express. The most rediculous thing about this movie: the girl first has a violent encounter with a ghost in her attic but doesn't seem to have any really problems going back to the attic after that. But after she's seen the same ghost in her backyard, she consequently refuses to leave the house for the rest of the movie. Again, totally predictable ending if you're somewhat familiar with the genre.