At the risk of sounding hyperbolous(That may or may not be a word), this might be one of the best horror movies I've seen. Definitely the best in the last ten years. It's like the Blair Witch took steroids and some acting lessons.
The movie has jump scares, but it's more about the suspense. Throughout many of the nighttime bedroom scenes, the camera is positioned with with a perfect view of both the sleeping couple as well as the doorway of their bedroom, which is wide open to expose their darkened upstairs hallway. Every one of these bedroom scenes is gut wrenching. You KNOW something is about to happen, but you never know what. A lone light at the end of the hallway gives off the perfect amount of light, which will leave you straining to see something in the darkness.
This is the type of movie that I think is best to see in a packed theater. Half of the experience is atmosphere, and hearing the terror shrieks of the theater patrons around me was wonderful.
Of course, at the same time, this is the perfect movie to watch on DVD (or Blu-Ray) late at night with all the lights off, but we'll have to wait quite a awhile for that.
I'm not a big fan of new-school horror. Rob Zombie is a hack, and it seems everything that comes out is either some torture-porn SAW ripoff or a ****ty remake. This is neither. It is something different. It turns the faux-documentary style of Blair Witch and [REC] on it's head.
It's not playing in all markets yet, 12 to be exact - Boston, Charlotte, Cincinnati, Cleveland, El Paso, Hampton Roads metro area, Indianapolis, Kansas City, Pittsburgh, Portland, Salt Lake City (lucky me!), and Toronto. However, Paramount has marketed this movie so well, that it will probably open nationwide within the next two weeks. When it opens near you, GO SEE IT.