I read that he had like one line in it in the Hong Kong scenes - haven't seen DARK KNIGHT but it's a very small part.
One of the more unusual elements was the fact that these weren't the usual B and C list Paris Hiltons or Pam Anderson types who usually get caught doing this shit over here. This scandal was unusually heavy in Hong Kong A-listers. (And pubic hair.) Cecilia Cheung in particular was a well regarded actress, and Gillian was really starting to come into her own. Perhaps that isn't the best way to phrase it.
A better comparison than the Disney-themed one above would be if Anne Hathaway was caught on tape getting fucked in the ass by Shia La Drunk. Then a couple of days later pictures emerged of Shia getting sucked off by Jessica Biel. A couple of days after that, there he is eating out Monica Belluci. Now, let's further say that Shia's friends with Vincent Cassel - who had no clue about this until he saw the pictures. This Edison Chen thing got pretty nuts.
Here he is doing what he does best. Other than getting actresses naked. Yes, that's Paul Rudd.