Here's Obama from debate #2:
And McCain from debate #2:
I'm not sure what these mean, but they seem to confirm the notions of McCain as an aggressive pilot who makes quick decisions (but has crashed several fighter jets and rubs many people the wrong way) and Obama as a temperate lawyer who digs methodically through the pro's and con's (but hasn't accomplished much other than getting many people to like and elect him).
In any event, I watched only the first half of the 2nd debate last night. It was dull and not very informative.
Then, from 23/6 ("some of the news, most of the time") here's a one-minute video wordcloud of the first debate: