Hope you don't mind if I take a break from the op-eds long enough to say I'm happy with Obama's choice of Biden. Looking at it in terms of Josh Marshall's bitch-slap theory of politics, what we know is that Biden can give as good as he gets. It's often helpful if the veep choice has a bit of attack dog in him, so that the Presidential candidate can float somewhat above the fray. Biden is a fighter, and has a gift for words (he was the originator of the 'noun-verb-9/11' meme that finished Rudy off last fall).
Obama choosing Biden is (for us geezers) like Pat Benatar singing, "Hit Me With Your Best Shot." Bring it, baby, because we can throw it right back atcha.
Game on. :)