Heh, yeah I saw that too. It was the 2nd night in a row Dave complained about his "big-name" computer that didn't work. I believe the latest is that they sent him the wrong part to fix it! Steve J. should send him a top-of-the-line G4 on the house so Letterman can rave about how Apple stepped in to save the day.
Come to think of it, it'd be great if just in general people could trade in their nasty old PC's for an Apple at a discount.