An Al Gore comeback would be quite entertaining. There would not only be his re-invented beyond-earthtones self, but a bumbling campaign with no clinton organization to rely on and none to speak of his own... But don't let your guard down. Remember that all Hillary has to do is take one Red State, and that need not be in the south. She covets Ohio above all.
The campaign ads would be quite entertaining:
Announcer: Can Al Gore provide us with stable leadership?
(Clip of Gore): HE BETRAAAAAYED THIS COUNTRY!!!!! HE PLAYED ON OUR FEARS!!!!!