"Troll" is a well-made Norwegian film will probably convince the gullible that trolls actually exist. This movie tries to combine Norwegian folklore with science. The first half of the film is disappointingly formulaic exposition crammed with sci-fi movie stereotypes: Eccentric father; brilliant daughter; fairy tales that turn out to be true; a section of mountain is dynamited by oblivious builders in the construction of a tunnel, liberating a gigantic creature from its 1000-year imprisonment; a skeptical prime minister and military; a helpful government advisor and a helpful soldier who are willing to believe what everyone else refuses to believe; and so on. A couple of scenes are obvious references to "Jurassic Park", and the struggle against the troll that occupies the second half of the film is reminiscent of "King Kong." The CGI troll is well rendered, and the acting is serviceable. The ending is one I should have expected, but didn't, which is a plus.