The Hollywood Reporterin tekemän haastattelun mukaan Jokeria esittänyt Heath Ledger kehotti Batmanin roolista muistettavaa Christian Balea lyömään itseään oikeasti The Dark Knight -elokuvan kuulustelukohtauksen kuvauksissa.
Bale muistaa tapauksen senkin vuoksi, että kyseessä oli heidän ensimmäinen yhteinen kohtauksensa kuvausten aikana. Ledgerin omistautuminen suoritukseensa noteerattiin, sillä hänelle myönnettiin postuumisti parhaan miessivuosan Oscar-palkinto vuonna 2009.
As you see in the movie, Batman starts beating the Joker and realizes that this is not your ordinary foe. Because the more I beat him the more he enjoys it. The more I'm giving him satisfaction. Heath was behaving in a very similar fashion. He was kinda egging me on. I was saying, "You know what, I really don't need to actually hit you. It's going to look just as good if I don't." And he's going, "Go on. Go on. Go on...." He was slamming himself around, and there were tiled walls inside of that set which were cracked and dented from him hurling himself into them. His commitment was total.