I feel certain that he'll go down in history, alongside Lincoln and FDR, as one of the USA's truly great Presidents. I think that the intelligence and steady-handedness that he brings to his office will continue to be such that the 'first Black President' thing, momentous as it was at the time, will be no more than an interesting footnote that will by no means define his place in the history books.
VforViennetta, you seem not to understand the structure of the American government very well. Of course Obama isn't "one man deciding the fate of the USA" and nobody who knows anything about the three branches of government, the division of powers and the system of checks and balances would think that he is. He is, however, the democratically elected holder of the Executive office, and as such he does have considerable power which, IMO, he has thus far exercised wisely and effectively for the good of the nation.
I don't agree with him 100% of the time, but I do think that he's the best thing that's happened to my country in my lifetime.
And, to get back to the point of the thread, he makes my ladyparts go all tingly. 