I'm only a half a Bill Maher fan, but these (youtube video, how I can embed you?) were hilarious. He calls it "Prick Patriotism."
You may have seen yesterday Gawker's writeup on the excellent Ford ad that parodies Cadillac's ...misguided.... characterization of the American work ethic (and what a typical hard-working American looks like). It's rage inducing, but your rage will be soothed by the Ford ad.