The Dark Knight2008

The Joker:
Ah, you made it. I'm so thrilled.

Batman:
Where's the detonator?

The Joker:
Go get him! [The Joker releases the Chechen's dogs which he has commandeered. Once Batman has dispatched them, He and the Joker fight; Batman gets trapped in a net and the Joker manages to overpower him] All the old familiar places. We really should stop this fighting, otherwise, we'll miss the fireworks.

Batman:
There won't be any fireworks!

The Joker:
And here we ...go. [Businessman sets the detonator down. Confused, the Joker looks at his clock, which says midnight]

Batman:
What were you trying to prove? That deep down, everyone's as ugly as you?! You're alone.

The Joker:
[snarls in fury and pulls out another detonator] You can't rely on anyone these days. You gotta do everything yourself. Don't we? That's okay. I came prepared. It's a funny world that we live in. Speaking of which, you know how I got these scars?

Batman:
No... but I know how you got these! [Fires steel spike protrusions from his gauntlet, hitting the Joker in the face, who drops the detonator. Batman kicks him off the building, but before the cackling Joker can plummet to his death, Batman snares his legs with a grapple and hoists him up]

The Joker:
Uhh, you... You just couldn't let me go, could you? This is what happens when an unstoppable force meets an immovable object. You truly are incorruptible, aren't you? Huh? You won't kill me out of some misplaced sense of self-righteousness...and I won't kill you because you're just too much fun. I think you and I are destined to do this forever.

Batman:
You'll be in a padded cell forever!

The Joker:
Maybe we could share one! You know, they'll be doubling up at the rate this city's inhabitants are losing their minds.

Batman:
This city just showed you that it's full of people ready to believe in good.

The Joker:
Until their spirit breaks completely. Until they get a good look at the real Harvey Dent, and the all heroic things he's done. You didn't think I'd risk losing the battle for Gotham's soul in a fist fight with you? No. You need an ace in the hole. Mine's Harvey.

Batman:
[horrified] What did you do?

Joker:
I took Gotham's "White Knight", and brought him down to our level. It wasn't hard. See, madness, as you know, is like gravity: all it takes is a little push! [laughs hysterically as he is taken into custody]