Wikipedia article on Nilbog and Troll 2. Did you know that the movie was made by Claudio Faragosso under the pseudonym Drake Floyd? Faragosso also did some directing on Zombi 3 which was the sequal to Zombi 2 which was not actually a sequal to Dawn of the Dead which was a sequal to Night of the Living Dead? Did you know that Michael Paul Stephenson, the actor who played Joshua, has business ventures in Salt Lake City, UT?
The official Troll 2 website. Apparently it is quite popular.