The official Harvey Dent campaign site:

http://ibelieveinharveydent.warnerbros.com/

The Joker's hacked version. Go through the email verify process and take a pixel away. When they're all gone, it's believed the first official pic of Mr. J is what is left:

http://www.ibelieveinharveydenttoo.com/

My User Contributions master list - my initial post links are down but scroll down page to find list to active links