Debate analysis: Offhand I would say that Obama came off as looking more Presidential. Photo taken from here.
Update: another angle, taken from here.
I love the way the caption ignores the most obvious thing about this photo. But in case you missed it, here's the closeup.US Republican presidential nominee Senator John McCain (R-AZ) reacts to almost heading the wrong way off the stage after shaking hands with Democratic presidential nominee Senator Barack Obama (D-IL) at the conclusion of the final presidential debate at Hofstra University in Hempstead, New York, October 15, 2008.
I would fault Senator McCain's debate coaches, as they obviously forgot to tell him not to stick his tongue out or drool.
Update 2: Jesus Christ! Here's another photo from the debate
U.S. Democratic presidential nominee Sen. Barack Obama (D-IL) (2nd R) and Republican presidential nominee Sen. John McCain (R-AZ) (2nd L) stand with their wives Cindy McCain (L) and Michelle Obama (R) after their presidential debate at Hofstra University in Hempstead, New York, October 15, 2008.
At least he didn't look at his watch.
