Clinton.
If I have to really explain myself why, then I don't think it would do any good. First, read my sig line. Second, all you Harley owners out there would understand my response: "If you have to ask, you wouldn't understand".
Carter is a close second.
FDR has to be in the mix. I honestly don't mean to stomp on the man's grave and I DO NOT mean to disrespect disabled folks, but I think he was sensationalized. I think, IMHO, that people sympathized with the disabled president and gave quite a long leash during his tenure. I mean, look at his time in office. No president in modern history will ever spend that much time in the White House. FDR could have really set the tone for our future the way the Founding Fathers intended. I honestly don't think he would have been the president people "think" he really was if WWII didn't happen. Hate to say it, but I believe one of the major reasons why America flourished was because of winning WWII. FDR was just along for the ride. The generals, soldiers, and citizens back home sacrificing for a greater good is what established our country firmly as the world leader, not FDR.
Divemedic,
As often as I disagree with you in past posts, you have a valid point about Taft.
I think Carter is a inspirational man, a motivational teacher, an amazing diplomat, compassionate, rational, and intelligent...but he was just not much of a leader. He is the kind of man all men should strive to be but he was lacking the desire to be followed that is needed to be President. He was always more interested in finding the good in everyone than he was in doing the dificult things a leader has to do.
PBP, I do see your point. Props to Carter for being a humanitarian. Habitat for Humanity has to be one of his biggest contributions to our nation.
However, I see nothing in the means of being rational, intelligent, and diplomatic about the Iran hostage situation. This is one of many blunders concerning him that I think contradicts the attributes you posted.
Just to stir things up, I'll say Ronald Reagan. He dismantled the alternative energy initiatives that Carter started (one of the few things Carter did right) and kept us on the path of dependence on foreign oil -- and that's how we got in the mess we are in now.
This makes him the worst president ever? I personally glad he did it. I don't want the fed govt deeply involved in alternative energy, only refereeing it.