You've probably seen the video of the WMD deployed recently against president Bush.
What most people don't consider is the possibility of a second-shoe-thrower. While there's no footage of the grassy knoll, such a vantage point would have been an excellent place for a Nike marksman to take his best shot at the president. It goes without mention that Woody Harrelson's dad wears shoes everyday.
This Muntader al-Zaidi is nothing but a patsy, folks. Get with it. This was an attack orchestrated by the CIA.
(Which probably explains why no shoes managed to hit the president)