Well, since I'm no Harry Potter fan (I saw 5 minutes of one of the movies, it did nothing for me) and I don't go to the movies anyway, I missed the first teaser trailer for
The Dark Knight Rises. But that's what the internet is for.
http://movies.yahoo.com/movie/1810159433/video/25982192
Personally, I'm enthusiastic and a little sad about this film. Christopher Nolan's Batman films have been the best ever made, IMO, it sucks that this will be his last one. However, I hope he goes out with a bang.