wouldn't work with a hammy fake grocery commercial for a line of toxic cosmetics made by the Joker. In Nolan's grim world, we see the Joker filming a terrified hostage/Batman imitator as he slowly toys with him before killing him. In Nolan's world, there's no room for Burton's big birthday-cake float, with Nicholson's Joker tossing cash to the citizens of Gotham just before trying to poison them; instead, Ledger's Joker brings the city to its knees by rigging two ferries with explosives and assassinating civic leaders. In Nolan's world, there couldn't be a climactic battle scene where the Joker spits out a fake set of chattering teeth after Batman bloodies his mouth. Ledger's Joker would never pull out a set of spectacles and say, "You wouldn't hit a guy with glasses, huh? Wouldya?" as Nicholson does.