Bill Nye

"The Science Guy"; Science Communicator, TV Presenter & Mechanical Engineer; Climate Change Activist

Ben Stein

Political Economist, Commentator, Author & Actor

Nev Schulman

Producer, Actor, Photographer & TV Host Known for MTV's "Catfish: The TV Show"

B.J. Novak

Actor, Writer & Comedian Known for "The Office"

Jonathan Kozol

Educator & Social Justice Advocate

Sherry Lansing

Former CEO of Paramount Pictures & Founder of The Sherry Lansing Foundation

Anne-Marie Slaughter

Foreign Policy Expert, Author & CEO of New America Foundation

Jessica Yellin

Founder of #NewsNotNoise; Former Chief White House Correspondent for CNN

Carol Leifer

Award-Winning Writer, Author, Actress & Standup Comedian

Joan Lunden

Award-Winning Journalist, Best-Selling Author, Health & Wellness Advocate

Jon Steinberg

CEO of Future Plc., Founder of Cheddar; Former President & COO of Buzzfeed; Former CEO of Daily Mail.com in North America

Josh Altman

Successful Real Estate Agent & Star of Bravo's "Million Dollar Listing"

Josh Radnor

Actor, Filmmaker, Author & Musician Best Known for his Role in "How I Met Your Mother"

Choosing Between Growth or Depth As A Man - Josh Radnor

Andy Cohen

Emmy Award-Winning Host & Producer of Bravo’s "Watch What Happens: Live"

Andy Cohen reacts to his infamous New Year’s Eve rant

Seth Meyers

Host of "Late Night with Seth Meyers" & Former Head Writer for SNL

Max Greenfield

Actor Known For "New Girl" & Children's Author

Monica Lewinsky

Producer, Social Activist, Contributing Editor to Vanity Fair, Expert on Cyberbullying, Women's Issues & Reinvention

Monica Lewinsky Suits Up for Reformation's New Power Voting Campaign

Ed Rendell

Former Governor of Pennsylvania; NBC News Political Analyst & Author

Robert Reich

Economic Analyst, CNBC Contributor, Professor, Author, Advisor to Presidents & Former Secretary of Labor

Steven Levitt

Economist, NY Times Bestselling Author of "Freakonomics," "SuperFreakonomics" & "Think Like a Freak"