Some of my favorite old quotes between the two from the primary:

Peter Baker of the New York Times pointed out to Obama that he once held a different view of his nominee to be secretary of state. "You belittled her travels around the world, equating it to having teas with foreign leaders," Baker recalled. "And your new White House counsel said that her résumé was grossly exaggerated when it came to foreign policy. I'm wondering whether you can talk about the evolution of your views of her credentials since the spring."

Remember Clinton, earlier this year? "Senator McCain will bring a lifetime of experience to the campaign, I will bring a lifetime of experience, and Senator Obama will bring a speech that he gave in 2002," she said.

Obama retorted that his foreign experience is "not just of what world leader I went and talked to in the ambassador's house who I had tea with."

And while we're reopening old wounds, there was Obama's mocking claim that "I don't think that Madeleine Albright would think that Hillary Clinton was the face of foreign policy during the Clinton administration."