I'm debating whether to listen to the Penn Jillette episode. I'm worried it might drive me up the wall, as I find that stripe of self-righteous libertarian/atheist/global-warming denialist particularly infuriating. But I'm curious to see whether/how Marc addresses that, given that Marc is a recovering alcoholic and generally seems like a spiritual person, not to mention a lefty, and how that collision with Jillette's views might come up during the episode.