Trollhunter is a Norwegian "found footage" mockumentary looking at a government conspiracy covering up the existence of Trolls in the Norwegian countryside.
The style is a cross between "Blair Witch Project" and "Dark Side of the Moon" (I loved the clip towards the end where the Norwegian PM is talking about trolls impeding the expansion of the Norwegian electricity grid). Three students investigating bear poaching come across a suspicious man (with truly frightening scratches down the side of his vehicle) and decide to follow him. They get more than they bargained for, including a thorough smearing with "troll stench".
Highly recommended if want to watch something different and enjoy horror movies.