I know the Nobel peace prize has suffered a credibility problem ever since they handed it out to Henry Kissinger, but... Al Gore? Who's next, Bono Vox? Bob Geldof? Michael Jackson? Enough aging celebrities with a messiah complex out there.
The bitter irony is of course that Al Gore was vice-president in one of the more warlike U.S. administrations in recent decades - which presided over bombing Yugoslavia, blowing up a pharmaceutical factory in Sudan, and the starvation embargo against Iraq, punctuated regularly by bombing raids. Whatever one can say about George Bush, at least he gave the Iraqis a chance to fight back (one which they have taken up enthusiastically).
Of course, this is all forgotten, as global warming and the war in Iraq are all too useful sticks to beat the Republicans with. The American liberal political memory is very short.