Simon Schama is a professor of art history and history at Columbia University, and is the author of numerous award-winning books; "Rough Crossings", his history of the American Revolution, won the National Book Critics Circle Award for General Nonfiction. He is a cultural essayist for the "New Yorker" and has written and presented more than thirty documentaries for the BBC, PBS, and the History Channel, including "The Power of Art", which won the 2007 International Emmy for Best Arts Programming, and "The American Future: A History", now available on DVD.