Andrew Sullivan; Christopher Buckley; Paige Rense; Jon Stewart

Andrew Sullivan, senior editor at The New Republic, introduces his new book, "Same-Sex Marriage: Pro & Con." Christopher Buckley, editor of Forbes FYI, shares his new book, "Wry Martinis." Paige Rense, editor in chief of Architectural Digest, discusses her magazine's success and the challenge of writing her first novel. Comedian Jon Stewart remembers the sibling rivalry that led him to pursue laughs.