Paul Hemp, HBR senior editor and author of the article "Avatar-Based Marketing."

Gardiner Morse, HBR senior editor. Also: Tammy Erickson on her HBR article "Managing Middlescence."

Michael Watkins, chairman of Genesis Advisers and author of "Shaping the Game." Also: Fred Reichheld, fellow at Bain & Company.

David Garvin, Harvard Business School professor. Also: Judith Ross on retaining your top performers during times of change.

David Champion, HBR senior editor, discusses the July-August 2006 issue of the magazine.

Mark Gerzon, mediation expert and author of "Leading Through Conflict: How Successful Leaders Transform Differences into Opportunities."

Malcolm Salter, Harvard Business School professor.

Henry Chesbrough, author of "Open Innovation: The New Imperative for Creating and Profiting from Technology."

Pankaj Ghemawat, Harvard Business School professor.

Felix Oberholzer, Harvard Business School professor.

Paul Hemp, HBR senior editor and author of the article "Are You Ready for E-tailing 2.0?"

Robert Galford, coauthor of "Your Leadership Legacy: Why Looking Toward the Future Will Make You a Better Leader Today."

David Lax and James Sebenius, authors of "3-D Negotiation: Powerful Tools to Change the Game in Your Most Important Deals."

Rosabeth Moss Kanter, Harvard Business School professor. Also: "How to Manage Urban School Districts."

Gary Pisano, Harvard Business School professor and author of "Science Business: The Promise, the Reality, and the Future of Biotech."

Jon Lukomnik, managing parter of Sinclair Capital LLC and coauthor of "The New Capitalists: How Citizen Investors Are Reshaping the Corporate Agenda."

Darrell Rigby, Bain & Company partner and head of the firm's global retail practice. Also: Leon Gorman, chairman of L.L.Bean.

Ken Denman, CEO of iPass.

Sylvia Ann Hewlett, founding president of the Center for Work-Life Policy.

Mark Kramer, managing director of FSG Social Impact Advisors.

Annie McKee, managing director of the Teleos Leadership Institute and coauthor of "Resonant Leadership."

John Landry, HBR book reviewer.

Rosabeth Moss Kanter, Bill Taylor, Herminia Ibarra, Paul Hemp, Tammy Erickson, and Tom Davenport, suggest New Year's resolutions for business executives.

Tom Stewart, HBR editor, discusses the January 2007 issue of the magazine.

Ram Charan, author of "Know-How: The 8 Skills That Separate People Who Perform from Those Who Don't."

Chris Trimble, Tuck School of Business faculty and coauthor of "Ten Rules for Strategic Innovators: From Idea to Execution."

Paul Hemp, HBR senior editor, discusses the magazine's annual survey of ideas and trends that will make an impact on business.

Anthony Mayo, director of the leadership initiative at Harvard Business School and coauthor of "Paths to Power."

Don Tapscott, CEO of New Paradigm and coauthor of "Wikinomics: How Mass Collaboration Changes Everything."

Jim Andrew, senior partner at The Boston Consulting Group and coauthor of "Payback: Reaping the Rewards of Innovation."

Chip Heath, Stanford Graduate School of Business professor and coauthor of "Made to Stick: Why Some Ideas Survive and Others Die."

Tom Davenport and Jeanne Harris, authors of "Competing on Analytics: The New Science of Winning."

Tammy Erickson, McKinsey Award-winning author.

Tim Butler, director of career development programs at Harvard Business School and author of "Getting Unstuck: How Dead Ends Become New Paths."

Howard Gardner, Harvard Graduate School of Education professor and author of "Five Minds for the Future."

Larry Bossidy, former chairman and CEO of Honeywell and AlliedSignal.

Adrian Slywotzky, author of "The Upside: The 7 Strategies for Turning Big Threats into Growth Breakthroughs."

Erich Joachimsthaler, CEO of Vivaldi Partners and author of "Hidden in Plain Sight: How to Find and Execute Your Company's Next Big Growth Strategy."

Dr. Leonard Marcus and Dr. Barry Dorn of the National Preparedness Leadership Initiative.

Duncan Watts, professor of sociology at Columbia University.

Bill George, Harvard Business School professor and author of "True North: Discover Your Authentic Leadership".

Sylvia Ann Hewlett, founding president of the Center for Work-Life Policy and author of "Off-Ramps and On-Ramps."

Marshall Goldsmith, executive coach and author of "What Got You Here Won't Get You There: How Successful People Become Even More Successful."

Chris Zook, partner at Bain & Company and author of "Unstoppable: Finding Hidden Assets to Renew the Core and Fuel Profitable Growth."

Alan Murray, assistant managing editor of the Wall Street Journal and author of "Revolt in the Boardroom."

Jonathan Zittrain, professor at the Oxford Internet Institute and cofounder of Harvard Law School's Berkman Center for Internet & Society.

Tammy Erickson, McKinsey Award-winning author.

John Boudreau, USC Marshall School of Business professor and coauthor of "Beyond HR: The New Science of Human Capital."

Paul Saffo, technology forecaster and author of the HBR article "Six Rules for Effective Forecasting."

David Weinberger, fellow at Harvard Law School's Berkman Center for Internet & Society and author of "Everything Is Miscellaneous."