Some excellent articles on how voters don't know Obama that well (thereby making the election solely about his competence) and the serious danger that McCain will indelibly mark him as a Michael Dukakis/John Kerry elitist early on, with the added bonus of playing into racially-loaded code-memes for "uppity negro." I agree that Obama needs to go on the offensive, and the sooner the better, especially in linking McCain (who still has a residual public image as a "maverick") with the Bush Administration train wreck. He should resist urges to make him look more like a "regular guy." Obama trying to bowl looked exactly like Hillary downing shots: contrived and insincere. Obama is smart; he shouldn't play dumb. The voters can smell a phony coming from a long ways off.
UPDATE: Speaking of "racially-loaded code-memes," Ezra Klein has a great piece on white privilege and white resentment.