I'd like to watch this movie again in a more suitable environment, but it was excellent, I thought. If you get the chance, I recommend seeing it.
I had the chance to see it on Wednesday, but we opted to do D&D Character Creation instead. I don't have a lot of faith in modern horror/thriller/suspense movies. But maybe I'll walk down and see it some evening if I'm not doing anything, since there are several movie theatres near here.
I've never even heard of it..
http://www.imdb.com/title/tt0481369/
It's been advertised for a while, but it's pretty easy to miss previews, even if you do watch TV occasionally.