Sharlet: Mike Papantonio, co-host with Robert F. Kennedy of Air America's "Ring of Fire" had me on the show this week to talk about my old gang The Family. Mike presents the liberal Christian counterpoint to fundamentalism in the new movie Jesus Camp. I might argue some points with him, but it's refreshing to hear a liberal Christian voice that speaks with as much force and conviction as that of the right. He's worth listening to. And he's put together a great program -- this week's guests also included Tim Dickinson, a Rolling Stone colleague who has put together one of the most thorough timelines to date on the lies that led the U.S. to war in Iraq for Mother Jones , William Greider, one of the grand old men of political journalism, and Laurie David on global warming.