I enjoyed the back-and-forth (more back than forth) on the fluoride "debate" with the chillmeister - remember don't say the name, or you may invoke the evil spirit.
Though his "arguments" were to cite articles that were years old (and mostly irrelevant) and punctuated by the ever-popular "Wha-BAM" level of commentary, it was quite instructive to me on how to be patient in discussing topical science with a stone-cold moron. And occasionally, he would be unknowingly hypocritical in his pronouncements which I found hysterical.
I also liked reading George's stories, until he stopped posting them. I hope his ex didn't kill him off.