Art imitates Life, but sometimes(to paraphrase Oscar Wilde), Life outdoes the weirdest Art....In a key scene in the movie, the Joker's voice comes over the loudspeaker on two ferry boats that have lost power and are wallowing in the water. Both are loaded with explosives. He tells the people trapped aboard the two powder kegs that they are part of a "social experiment"-there being a detonator on each boat that will blow up the other boat. If one does not destroy the other by midnight, he will destroy both boats. And so a countdown begins, with scenes of chaos, soul-searching,...