I suppose I should've waited to do my trailer round-up, since the Hobbit trailer was released online just a few hours later. Anyway, here it is, and it looks good!
I had a lot of problems with Peter Jackson's Lord of the Rings trilogy of films, since I'm a huge fan of the novels and he took too many liberties and made too many unnecessary changes that really hurt the overall story and gutted the heart of some of the characters, but this one looks very cool. Also, the original Hobbit novel is more lighthearted and fun than the Lord of the Rings books, so it should be more in line with Jackson's somewhat whimsical film style.
Anyway, I'll see it: