Every bit as tedious as the headline makes it sound. To grasp just how spiteful this is, note that Olbermann wasn’t originally scheduled to appear. He was the guy Letterman got to replace McCain. There must be dozens of people on his own network who’d love a turn on “Late Show,” but because he wanted to flip Maverick the bird, he dialed up the most notorious Republican-hater he could find. Good work, Dave.

Note Olby’s conspicuous smile near the end at the thought of Palin coming on. Not the first time he’s been unable to suppress derisive mirth at a mention of her.