Henry Mintzberg, professor of management at McGill University.

John Quelch, Harvard Business School professor and coauthor of the HBR article "How to Market in a Downturn."

Philip Lay and Todd Hewlin, managing directors at TCG Advisors and coauthors of the HBR article "In a Downturn, Provoke Your Customers."

Bronwyn Fryer, HBR senior editor and author of the case study "The Layoff."

Paul Krugman, Nobel Prize-winning economist and op-ed columnist for The New York Times.

Colonel Tom Kolditz, professor and head of the department of Behavioral Sciences and Leadership at the U.S. Military Academy at West Point.

Sydney Finkelstein, Tuck School of Business professor and author of "Why Smart Executives Fail: And What You Can Learn from Their Mistakes."

Barbara Kellerman, lecturer at the Harvard Kennedy School and author of "Followership: How Followers Are Creating Change and Changing Leaders."

David Rhodes, global leader of The Boston Consulting Group's Financial Institutions Practice.

Peter Ubel, physician and behavioral scientist at the University of Michigan and author of "Free Market Madness."