PZ Myers on Skepticast

PZ Myers, blogger for the mighty Pharyngula, is a guest on the podcast The Skeptic's Guide to the Universe. They discuss his recent radio debate with Intelligent Design proponent Geoffrey Simmons.
The radio debate is something to behold. Myers is able to rebut Simmons off the top of his head, while Simmons is unaware of the fossil record he himself mentions and wrote about.  Myers points out that Simmons does not know what he is talking about. Then Myers is warned against making personal attacks.
It is actually not an ad hominem attack to call someone an ignoramus. I am a complete ignoramus when it comes to the sport of cricket. I happen to be ignorant of the sport. It says nothing about my character.
In Simmons' case, his ignorance of biological evidence is a touchier subject because he has placed himself as an authority on the subject -- albiet an authority who emphasizes the role of magic in natural history.