http://theforce.net/theater/nonsw/worldsfinest/
Fan-made trailer (hey who else would know who Oracle is?) that probably
cost a few hundred dollars and still looks more interesting than most real
movies. (That line about the White House, by the way, is straight out of a
recent issue of Superman/Batman.)
You can see a teaser for the actual film Batman Begins at
http://batmanbegins.warnerbros.com/ that looks sorta promising.