After protesting invitations of the pope by the U.S. Congress and the City of St. Augustine, Florida, we hear some of our favorite atheist comedians, including Julia Sweeney, Leighann Lord, George Carlin, Bill Maher and Roy Zimmerman, as well as irreverent verses by Yip Harburg. Then we talk with Katja Guenther, professor of sociology at UC-Riverside, about her current research into humor in the "New Atheism" movement.