Zach Galifianakis; Steve Martin; Robert Duvall; Jean Pigozzi

Comedian Zach Galifianakis talks about his stand-up career and his role in "The Hangover." Actor, musician, and author Steve Martin introduces his first full-length novel, "Object of Beauty," which tells the story of a young artist navigating the art scene in New York City. Academy Award-winning actor Robert Duvall reflects on his career. Photographer and art collector Jean Pigozzi on his various interests, business, and his friends.