The U.K site for Batman Begins has a new trailer up, including scenes not show previously. You can see the trailer here.
There are more scenes of the Batmobile in action, more of The Scarecrow, and even a scene reminiscent of the comic book "Batman: Year One" where Bruce Wayne initially goes out to fight crime before doing so in the Batman persona.
There are a couple of scenes (one involving the Batmobile) where I got chills watching this thing. I so cannot wait for this movie.