So we all love 'The Dark Knight'. Possibly the greatest superhero film of our times. But you know what, as much as the Two Face is essential to the film - to showing how one can fall beneath one's own standards, forget one's code, etc, etc, he slows the film down. I mean, we all want more of the Joker. We want to see him push the envelope for crazy further. Nolan should have understood this and taken a cue from Schumacher's much-deplored flick 'Batman Forever'. All he had to do was write a scene where Batman throws a pile of coins on the Two Face and the crazy attorney is done for. See for yourself how effective the scene would have been.