Didn't notice the rack shot between the helicopter and the cables as joker says "rack them up" - just coincidence apparently.
Prefers to work without storyboards, and hires story boarders when they are necessary. Does have his own doodles but doesn't want to show them to anybody.
On the interrogation scene as an allusion to current debates over torture: Batman provides the perfect character for exploring such avenues, and the scene was always intended to explore.
Q: Why is there a potato peeler on the Joker's person?
A: Heath felt this would be a suitably gruesome and amusing punch line out the parade of knives being drawn from The Joker's pockets. I don't like to think what the joker would do with a potato peeler.