An exclusive bonus featurette that will be on The Dark Knight DVD has been released courtesy of The Guardian. The Dark Knight DVD will be available on December 9th.
In clip No 2, Aaron Eckhart's Harvey Dent comes under the spotlight. Nolan talks about wanting to cast an actor who could embody the all-American archetype; a "Robert Redford type", but with edge. Eckhart himself talks about the challenge of portraying Gotham's white knight.