As promised , John McCain finally made it to the Late Show with David Letterman tonight, and we've got CBS-supplied footage of many of the highlights. Not included: the twenty minutes of relentless McCain jokes that Letterman opened the show with to signal that this would hardly be a pushover appearance for McCain. And it wasn't!Things started to get somewhat heated just before the first commercial break, when Letterman clearly surprised McCain by meeting his Ayers reference with a question about McCain's association with Watergate criminal G. Gordon Liddy. As McCain struggled to figure out a response (eventually, he decided to embrace Liddy), Letterman pricelessly threw to commercial, leaving the candidate stranded. Also, Letterman? Not that confident in Sarah Palin's ability to lead! Peruse some of these highlights and see for yourself. [CBS ]