Personaly, I would love to see Obama run.  He's got an amazing amount of smarts, integrity, and following.  But, he's not really experienced enough, but I'm not sure that's a deal breaker.  If a country can elect someone like Bush 2.1, then I guess good experience is not a prerequisite.  Anyway, Obama is my Number One choice, and a woman as VP would be great.  Or, the other way around.
Now, which women would qualify as pres or VP?  Hmmmmmmm....... something to think about.