During the Presidential election, I always liked to keep in mind that we weren't just electing a President, but the President's team, too. So remember that we're not only trading out Bush for Obama, we're also getting rid of his godawful team of staffers, cabinet secretaries, and other appointees. Think Progress compiled a handy list of the 43 worst Bush appointees, and it's quite sobering to run through such a list, remembering 8 years of running the country into the ground.
I always find it confounding how Republicans can appoint cabinet secretaries to head agencies like the Department of Labor or the EPA who seem diametrically opposed to the agency's mission. It'd be as if a Democrat appointed an ideological pacifist to head the Department of Defense or a radical anarchist to Attorney General or the Secretary of the Treasury.