Doc, I've merged your thread into the already-existing Dark Knight thread, and edited your link to lessen spoilers.
Yeah I saw that clip a few days ago. I'm willing to bet that it's either at the end of the movie or even as part of an after-credits sequence.
I really doubt that they'll run two villains at the same time. It's been proven that trying that hardly pans out. Look at [i]Spider-Man 3[/i], or [i]Batman and Robin[/i] and [i]Batman Forever[/i] (though the latter almost pulled it off).
Still, I think that Aaron Eckhart looks like he can pull off Two-Face quite well, which is something I was sort of iffy about in the past. I always thought he'd make a good Dent, but Two-Face is a whole other can of worms. I also hope it means that the next movie will take inspiration from [i]The Long Halloween[/i], which would kick tremendous amounts of ass.
I also found this image around the same time I saw said clip, but I'm not sure if it's the real deal or not. I suspect not, but still,
click for supero-spoiler picture.