I'm a little exited to see this movie. The troll hunter (and several other roles) are actually well known Norwegian comedians and the trolls are a key element to our Norwegian fairy tales and folklore.
The story is about some film students making a documentary about a seemingly crazy man - a troll hunter.
The cand-held camera caused a lot of extra tracking work for the CGI.
...Exited
Check out some "ancient" artwork by the famous artist Theodor Kittelsen -
http://www.google.no/images?q=theodor+kittelsen+troll