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

Anne-Marie Slaughter

Foreign Policy Expert, Author & CEO of New America Foundation

B.J. Novak

Actor, Writer & Comedian Known for "The Office"

Bill Nye

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

Carol Leifer

Award-Winning Writer, Author, Actress & Standup Comedian

Henry Winkler

Actor, Producer, Director & Best-Selling Author; Best Known for "Happy Days"

Jessica Yellin

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

Jon Steinberg

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

Jonathan Kozol

Educator & Social Justice Advocate

Max Greenfield

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

Melissa Rivers

Actress, Television Host & Producer, Equestrienne, and Philanthropist; Daughter of Late Comedian Joan Rivers

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

Natasha Lyonne

Emmy Nominated Actress; Known for "American Pie," "Orange Is the New Black" & "Russian Doll"

Nev Schulman

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

Seth Meyers

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

Sherry Lansing

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

William Shatner

Emmy-Award Winning Actor, Known for "Star Trek" & "Boston Legal"