Plot: This weeks guests include director of "Merchants of Doubt" Robert Kenner, former Republican member of the United States House of Representatives Tom Davis, Editor-in-Chief for the Economist magazine Zanny Minton Beddoes, co-founder of the black political blog Jack and Jill Politics and CEO of Cultivated Wit Baratunde Thurston, and actor and author of "Holy Cow" David Duchovny.