In Batman: Under the Red Hood, I'm brought before Black Mask and decide for a glass of water. I proceed to use it to kill three of Mask's mooks.
In The Dark Knight, the way I mess with Harvey's already fragile psyche with my bedside lecture about "schemers" and how I'm merely an "agent of chaos". And then I put a gun in Harvey's hands, and finish my sales pitch with "And you know the thing about chaos? It's fair." The second Harvey breaks out the scarred two-sided coin, I've already won.
One time in Devil's Advocate, while I was awaiting my execution in Blackgate Prison, some fat thug named Tommy Mangles called me Whitey and threatened to murder me. I asked if I should apologize, but he insisted on killing me, saying, "'Sorry' don't walk the dog, Whitey." That's when I pulled off a Moment of Awesome that started bordering on Nightmare Fuel by attacking him in self-defense, starting off with a Groin Attack:
"Really? Well, what if I was really sorry? Would that make a— difference? Would that satisfy you? [I pull off my shoe and start beating him to a bloody pulp with it like a maniac...] If I was really... really... REALLY...REALLY... REALLY... SORRY? [...right before the guards restrain me] WELL, I'M NOT!"