I watched the Norwegian TROLDJÆGEREN (or "Trolljegeren" - why do they have to misspell everything in Norway!) and I thought it was really good. The first 15 minutes or so reminded me of a bad ripoff of THE BLAIR WITCH PROJECT but as soon as they're in those woods we're off to a wild ride. Highly recommended. The Scandinavian DVD has quite of bit of cool behind the scenes footage but oddly enough there's no trailer. The UK DVD seems to have the same extras and a trailer. I got the DVD from the Fona2000 webshop where it's 50 kr.
NB: the drunk monkeys at IMDb just don't seem to get much right; No, the English title for the movie isn't "Trollhunter" but The Troll Hunter.