I don't really like any of those choices, but if I'd had to pick, I'd go with Charles Krauthammer. Because President Krauthammer just sounds good.
That is what you want to hear from a candidate.
Harry Reid. Because he's a former boxer and knows how to kick azz.
Romney is the most qualified for the job at this point. That includes many you did not list.
Nancy Pelosi, I just love her to DEATH>
None I wouldn't vote for someone famous, there are genius's out there who have wanted to solve the worlds problems since time began and we don't find them because we want someone famous rather than not. So until that time comes I don't vote for no one.
I would pick a sock puppet over any of them.
None of the above