Chris Hughes

Senior Fellow, Institute on Race, Power, and Political Economy; Co-founder of Facebook & Former Editor-in-Chief at The New Republic

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

John Legend

EGOT Winning Musician, Producer & Philantropist

Jim Lucas

Portrays the life and times of Dr. Martin Luther King, Jr.

Bill Clinton

42nd President of the United States; Founder of the William J. Clinton Foundation

Ethan Zohn

Winner of "Survivor" Africa, 2x Cancer Survivor, Stem Cell Transplant Recipient, Social Entrepreneur, Philanthropist, Cancer Research Advocate, Former Pro Soccer Player, Sports Broadcaster & TV Personality

Joe Torre

Chief Baseball Officer for Major League Baseball; National Baseball Hall of Famer, 4-Time World Series Champion & 9-Time MLB All-Star

Gloria Steinem

Feminist Writer, Activist & Organizer; Co-Founder of New York Magazine & Ms. Magazine

Martin Sheen

Award-Winning Actor Known for "The West Wing" & "Grace and Frankie;" Social Activist & Humanitarian

Reverend Al Sharpton

Baptist Minister, Political, Civil Rights & Social Justice Activist

David Satcher, M.D., Ph.D.

16th US Surgeon General; Founding Director of the Satcher Health Leadership

Isabella Rossellini

Italian actress, filmmaker, author, philanthropist, and model.

Cal Ripken, Jr.

President & CEO Ripken Baseball, Inc.; Baseball "Ironman" and Legendary Shortstop from the Baltimore Orioles

Ed Rendell

Former Governor of Pennsylvania; NBC News Political Analyst & Author

Chris Matthews

Former Host, Hardball with Chris Matthews, MSNBC

Carson Kressley

TV Personality & Fashion Designer; Best Known for "Queer Eye for the Straight Guy"

Wendy Kopp

CEO of Teach For All & Founder of Teach For America; Childhood Education Advocate

Josh Klein

Hacker & Author of "Hacking Work"

Billie Jean King

Former World #1 Professional Tennis Player & Sports Icon; Advocate for Women's Equality

Dr. Michio Kaku

World-Renowned Futurist & Theoretical Physicist