A Serbian Film will be released in the U.S. this coming February, heavily edited to get an "R" rating. I'm not into printing spoilers about this particular film- you can read them all over the net, but I have to wonder how much the of film's power will be diluted in process of making it palatable to the Bible Belt and the red states (where it will probably do its biggest business).
An un-edited version will play in art-houses (or at least in small, independent theaters lacking corporate bosses who fear the wrath of the Right) and be released on DVD. While I think the film is unsuitable for many people (if you have kids you probably shouldn't even think about watching it), but if you do choose to see it, view an unedited version in a theater with a great sound system. This is the most unsettling movie I've ever seen, and if you're going to go for it, you might as well go all in.
The red-band trailer for the film is available on my original post about the film. It is seriously not safe for work.
It will be theatrically released in the U.K. on December 10th, and DVD sales across the pond start on January 3rd.