The House Of The Devil is a good, suspenseful movie but moves at a slow, slow pace. If you can overcome that obstacle, you're sure to enjoy this retro-themed horror flick.
Have you seen this movie? What do you think of it?
(http://fight-evil.com/movies/h/houseofthedevil-2009/3.jpg)
If I recall, the only Ti West movie I've seen was The Roost (2005), which I thought had a really interesting feel to it.
I've heard mixed things about this one, but I get the feeling that I'd like it when I get around to seeing it.