The Devil's House
I'm not even sure if it was intended to be a serious movie or not, it was bad enough that I want to think that it was made not to be serious, you know it's just taking the piss or something like that. The entire movie basically is just a girl walking around a house, a very nice house mind you, but she basically wanders the house just to pad out the length of the movie. I'm pretty sure she just mindlessly walked around the house for over an hour, with nothing even remotely creepy or scary happening. Then, it about the last 30 minutes or so, we get to see something vaguely creepy, then in the last 20 minutes we get to watch a really dumb chase scene. I honestly do feel as if this movie was made ironically, but I can't find anything on the Internet to suggest that it is. The biggest waste of time with this movie is that its just boring. It's not boring in a way that the movie is creating an atmosphere, it's just boring. Nothing happens in it, like it was meant to be a very lovely house tour and not a horror movie. Not recommended.
Honorabe mentions: The Den, The Human Centipede, Sorority Row, and probably a few else I'm forgetting.