Gotham Tonight with Mike Engel...
You have to admire the effort. I'm not sure how effective this specific kind of viral marketing will be in getting assess in seats but no film can match The Dark Knight in it's commitment to bringing in fans to it's universe and making it feel as real as possible.
This piece of viral marketing is on Comcast OnDemand and features a supporting character from the film Mike Engel (Anthony Michael Hall) as a show host debating about Harvey Dent and his two competitors in the race for election to D.A. Here's the vid below...source - /film