Marcus Buckingham, founder of TMBC and author of "StandOut."

Paul Polman, CEO of Unilever.

Daniel Gross, columnist and economics editor for Yahoo! Finance and author of "Better, Stronger, Faster: The Myth of American Decline . . . and the Rise of a New Economy."

Ian Bremmer, president of Eurasia Group and author of "Every Nation for Itself: Winners and Losers in a G-Zero World."

Doc Searls, alumnus fellow at the Berkman Center for Internet & Society at Harvard University and author of "The Intention Economy."

Ken Favaro, senior partner at Booz & Company and coauthor of the HBR article "Creating an Organic Growth Machine."

Christiane Amanpour, renowned war correspondent and news anchor.

Charlotte Fritz, assistant professor at Portland State University.

Avivah Wittenberg-Cox, CEO of the consultancy 20-first and author of "How Women Mean Business."

Tom Davenport, Babson College professor and coauthor of "Judgment Calls: Twelve Stories of Big Decisions and the Teams That Got Them Right."