If there would be something like a winner of an argument, dear Russel, then in my opinion all the points go to Stephen Fry.
You are a very intelligent guy and even if you would talk about something what doesn't interests me altogether I still would enjoy the fact that you are very well spoken and your utterly beautiful use of language.
OK, enough flattery! After watching this I actually wonder if you really watched "Zeitgeist - The Movie".
If I'm not mistaken I believe I saw an interview in what you were talking about just that. If I'm right, my advice is to rewatch the part on religions. I believe you missed that. You probably went to the bathroom without hitting the pause button.
Have a good one!