My favorite schadenfraude moment last night: watching Sen. Tom Harkin pretend (I'm assuming he was pretending) to enjoy Howard Dean's maniacal performance on stage after his stunning third-place finish. Dean looked as scary as he ever has. Nothing is weirder than someone trying really, really hard to look happy and energized when he's really annoyed and disappointed. Dean looked like the Incredible Hulk, just before he turns green. Harkin must have been thinking: I endorsed this. There was a perverse pleasure in watching Harkin, since his endorsement was so opportunistic, based on a calculation that Dean would win. He deserved...