An article on the History News Network offers a survey of 109 historians on the presidency of George W. Bush.
My favorite quotes:
"No individual president can compare to the second Bush," wrote one. "Glib, contemptuous, ignorant, incurious, a dupe of anyone who humors his deluded belief in his heroic self, he has bankrupted the country with his disastrous war and his tax breaks for the rich, trampled on the Bill of Rights, appointed foxes in every henhouse, compounded the terrorist threat, turned a blind eye to torture and corruption and a looming ecological disaster, and squandered the rest of the world’s goodwill. In short, no other president’s faults have had so deleterious an effect on not only the country but the world at large."
"George Bush has combined mediocrity with malevolent policies and has thus seriously damaged the welfare and standing of the United States," wrote one of the historians, echoing the assessments of many of his professional colleagues.
"Bush does only two things well," said one of the most distinguished historians. "He knows how to make the very rich very much richer, and he has an amazing talent for f**king up everything else he even approaches. His administration has been the most reckless, dangerous, irresponsible, mendacious, arrogant, self-righteous, incompetent, and deeply corrupt one in all of American history."
There are more, and it's worth a visit.