From the recaps I've heard, Obama has taken a much more aggressive stance in the debate and probably done away with a lot of the skepticism surrounding his vagueness and quietness on issues.
And as much as Clinton did well... I really don't see how trying to silence the arguing by saying all the Democrats were basically the same would impress anyone.

What saddens me is that despite giving another strong performance and sticking out, Biden hasn't had any real momentum.

I'll take Obama over Clinton, but in all honesty, Clinton is growing on me a bit... Not like she had anywhere to go but up.
She's probably tied for #5 with Dodd for my Democrat preference list.

__________________
"Man lives in the sunlit world of that which he believes to be reality. But unseen by most is an underworld, a place that is just as real... but not as brightly lit... A DARK SIDE!"
-opening from Tales From the Darkside