I saw the trailer when I went to watch Harry Potter. Definetly, Im not gonna miss it!
People consider that the books written by Richard Tolkien actually were responsible for all this wave of fantasy-magic-RPG universe that has evolved in the last thirty years.
I've never read any of his books, but I intend to read at least one chapter of the trilogy, before the film comes out here, just to get into the mood of his universe.
That australian guy, Hugo Weaving, who was "the Agent Smith" from Matrix, will be in the movie, playing the role of Elrond.
Elijah Wood, that boy from "The Good Son", a movie with Macaulay Culkin, will play the role of Frodo, the Hobbit.
Lord of the Rings, the official site