"I seem to remember a tv road trip programme where a creationist asked a evolutionist geologist if he would discuss with a creationist geologist, and the reply was, that he wouldn't waste his time."

I think that the "evolutionist" (whatever that is) geologist (did you mean 'real' geologist, pete?) was being very polite. I would have told the "creationist geologist" (whatever one of those is) to f***k off!