Clay Christensen, Harvard Business School professor and coauthor of the HBR article "Reinventing Your Business Model."

Michael Watkins, cofounder of Genesis Advisers and author of the HBR article "Picking the Right Transition Strategy."

Marshall Goldsmith, executive coach and author of "Succession: Are You Ready?"

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

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

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

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

Rita McGrath, Columbia Business School professor and coauthor of "Discovery-Driven Growth."

Richard Bohmer, physician, Harvard Business School professor, and author of "Designing Care: Aligning the Nature and Management of Health Care."

Ron Heifetz, founder of the Center for Public Leadership at the Harvard Kennedy School and coauthor of "The Practice of Adaptive Leadership."

Stewart Friedman, Wharton School professor and author of "Total Leadership: Be a Better Leader, Have a Richer Life."

Dr. Robert Blendon, professor at the Harvard School of Public Health and the John F. Kennedy School of Government.

Roger Martin, dean of the Rotman School of Management and author of "The Design of Business."

Andrew McAfee, principal research scientist at MIT's Center for Digital Business and author of "Enterprise 2.0."

Dr. Atul Gawande, surgeon at Brigham and Women's Hospital and author of "The Checklist Manifesto."

Tom Davenport, Babson College professor and coauthor of "Analytics at Work: Smarter Decisions, Better Results."

Richard Pascale, associate fellow of Said Business School at Oxford University and coauthor of "The Power of Positive Deviance."

Scott Berinato and Andy O'Connell, editors of the Idea Watch section of Harvard Business Review.

Dr. Oliver Sacks, neurologist and author of "The Mind's Eye."

Adm. Thad Allen, USCG (Ret.)

Larry Kramer, founder of MarketWatch, Inc., and author of "C-Scape: Conquer the Forces Changing Business Today."

Rita McGrath, Columbia Business School professor and coauthor of "Discovery-Driven Growth."

John Donahoe, CEO of eBay.

Zakary Tormala, associate professor of marketing at Stanford's Graduate School of Business.

Andrew Waldeck, partner at Innosight and coauthor of the HBR article "The New M&A Playbook."

Martin Seligman, director of the Positive Psychology Center at the University of Pennsylvania and author of the HBR article "Building Resilience."

Pankaj Ghemawat, IESE Business School professor and author of "World 3.0: Global Prosperity and How to Achieve It."

Nicholas Dunbar, author of "The Devil's Derivatives: The Untold Story of the Slick Traders and Hapless Regulators Who Almost Blew Up Wall Street ... and Are Ready to Do It Again."

Michelle Bachelet, former President of Chile, executive director of UN Women.

Jib Ellison, founder of Blu Skye and coauthor of the HBR article "The Sustainable Economy."

Muhtar Kent, CEO of Coca-Cola.

Nancy Koehn, Harvard Business School historian and editor of "The Story of American Business."

Dan Pallotta, president of Advertising for Humanity and author of "Uncharitable."

Scott Doorley and Scott Witthoft, co-directors of the Environments Collaborative at the Stanford University d.school and authors of "Make Space."

Kareem Abdul-Jabbar, basketball legend, New York Times best-selling author, and filmmaker.

Andy O'Connell and Scott Berinato, editors of the Idea Watch section of HBR and The Daily Stat.

Mihir Desai, Harvard Business School professor and author of the HBR article "The Incentive Bubble."

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

Paul Polman, CEO of Unilever.

Andrew Zolli, director of PopTech and coauthor of "Resilience: Why Things Bounce Back."

Russ Feingold, former US senator from Wisconsin and founder of Progressives United.

Nate Silver, statistician and founder of The New York Times political blog FiveThirtyEight.com.

Bryan Garner, editor in chief of Black's Law Dictionary and author of the "HBR Guide to Better Business Writing."

Bruce Nussbaum, professor at Parsons The New School of Design and author of "Creative Intelligence: Harnessing the Power to Create, Connect, and Inspire."

Mark Tercek, CEO of The Nature Conservancy and author of "Nature's Fortune: How Business and Society Thrive by Investing in Nature."

Thomas Mooney, co-owner and CEO of House Spirits Distillery.

Ram Charan, coauthor of "Boards that Lead," talks about what he's learned in three decades of helping executives make tough decisions.

Freek Vermeulen of London Business School explains how best practices become bad practices.

The iconic comedian speaks with HBR's Adi Ignatius about work, life, and, yes, comedy.

Sandy Pentland, MIT professor, on how big data is revealing the science behind how we work together, based on his book "Social Physics: How Good Ideas Spread."