Letterman Highlights McCain's Ayers: Domestic Terrorist G. Gordon Liddy

John McCain finally deigned to appear on David Letterman's little show last night, even boarding an elitist helicopter to get there » 10/17/08 10:00am 10/17/08 10:00am when his private plane wouldn't do the trick. Sure, he expected to just make an apology and crack a bunch of jokes, but Letterman brought his A-game and asked him about how he pals around …