The trailer for District 9 looks interesting. I particularly like the way the alien’s face is pixelated out in the interview, both for privacy in the world of the film and to not spoil the reveal for movie goers.
Update: This movie is based on a short that director Neill Blomkamp did in 2005. (thx, kenneth)
Update: An uncensored version of the trailer is available here. (thx, lisa)
Update: A full trailer is now available.