There's a site related to The Dark Knight that contains a promotional image for the character District Attorney Harvey Dent. It's basically an election poster:
It's nice to see an image from the movie, but it's pretty boring, really. Now if you want to see something very similar that could turn out to be much more interesting, head on over to this very similarly name website:
At first I wasn't sure what the point of the site was... You enter your email address and you then receive a link with an X &Y coordinate to input on the landing page. What happens when you do that is that you uncover one pixel of an image that is beneath the political poster.
The email will come from email account "tragicpast" and this was in the email I received:
"I always say, you never know what a man is truly made of until you peel the skin off his face one piece at a time."
I think that sets the tone for the character quite nicely, don't you? :-)
What is it an image of? I don't know, but the more people that visit the page and input coordinates the faster we'll find out, so head on over and do your part!
Nice bit of viral marketing. :-)