The Ruins

It looks like  yet another dumb-americans-in-a-foreign-country gore fest; but it's not.  The movie is gory; but I wouldn't put it in the same category as Wolf Creek or Hostel.  It's more survival horror.

The antogonist is surprisingly scary.  It made for a really suspenseful movie.  

Not a whole lot of negative things to say.  Check it out if you like a good horror story with more than a couple of twists.