ANYTHING by the Joker in Arkham, Mark Hamill really was awesome in it.
"Come on, boys. He's just one man... one man dressed like a lunatic and armed to the teeth. Hehehehe... Go get him!"
Joker: Don't worry boys, Batman will never make it to the Medical Wing. And if he does, well look on the bright side, you're just seconds away from medical care!
"I want everyone to know that I really appreciate all the hard work. You know, watching you guys is like a night in, watching my favorite movie. What was the name of that movie again? Oh, yes. Attack of the stupid bungling idiots who can't find an bigger idiot running around dressed like a bat! Now get to it! "
"Ding d-ding, dong! Joker here! Here's what's new in the asylum... Some idiot is running around the asylum, dressed like a bat...! I know! Crazy! He should be considered costumed and dangerous. "
"Harley tells me the Batman's car is still parked right outside Intensive Treatment. We can't have him up and leave us! Every thug, villain, murderer and kindergarten teacher that isn't carrying out party orders should head there now and smash it to pieces! "
And finally: "Tell me Bats. What are you really scared of? Failing to save this cesspool of a city? Not finding the Commissioner in time? Me, in a THONG? "