I actually hate comic book movies, like fucking hate them, they just bore me shitless and they're just dumb. But I thought what Chris Nolan did with … - Heath Ledger

Most of the time you don't even know they're there. Now, that's the scary thing. It's really strange and invading, but I'm still working it all out. I try to not let it bother me. And if I want to swim naked in my pool, I'm still going to do it. I certainly don't want to feel that I have to change everything in my life that I do to cater to them. I just won't let it happen.

I sat around in a hotel room in London for about a month, locked myself away, formed a little diary and experimented with voices — it was important to try to find a somewhat iconic voice and laugh. I ended up landing more in the realm of a psychopath — someone with very little to no conscience towards his acts … just an absolute sociopath, a cold-blooded, mass-murdering clown .... [being given] free rein [by director Christopher Nolan was] fun, because there are no real boundaries to what The Joker would say or do. Nothing intimidates him, and everything is a big joke."

I just like interesting people. When we worked together on Ned Kelly, Naomi and I definitely had a connection, but it probably happened off screen rather than on, because when you're working there's nothing sexy about 50 people standing around staring at you.