George Mitchell

Global Diplomat, Peace Negotiator & Leadership Expert; Former Senate Majority Leader Who Enjoyed Bipartisan Respect

Emmy Rossum

Actress Known for Showtime's "Shameless," Singer-Songwriter & Equal Pay Advocate

Jared Cohen

President, Jigsaw (previously Google Ideas) & Chief Advisor to Alphabet Executive Chairman (former Google CEO) Eric Schmidt

Scott Harrison

Founder & CEO of Charity: Water & World Economic Forum Young Global Leader

Dambisa Moyo

Global Economist, Author & Investor in the Future

Clay Shirky

Expert on New Technology & Social Media, & How They Shape Culture; Professor & Distinguished Writer in Residence, NYU

Andy Samberg

Actor, Comedian, Rapper & Writer; Known for "Saturday Night Live" & "Brooklyn Nine-Nine"

Hoda Kotb

Broadcast Journalist, Television Personality, Author & Co-Anchor of "The Today Show"

I've Loved You Since Forever Board Book

Chris Hughes

Co-founder, Facebook and Editor-in-Chief and Publisher, The New Republic

Lee Daniels

Director, Writer & Producer Known for "Precious" and "Empire"; Creator of Lee Daniels Entertainment

Christy Turlington Burns

Model & Founder of Every Mother Counts; Anti-Smoking Activist

Jeffrey Tambor

Emmy Award-Winning Actor of "Arrested Development," "The Hangover," & For Transgender Role on Amazon's "Transparent"

Diane Sawyer

Anchor, ABC World News

Susan Sarandon

Academy-Winning Actress & Activist

Charlie Rose

Anchor and Executive Editor

Rachael Ray

Chef, Author & Host of the "Rachael Ray Show"

John Oliver

Emmy-Winning Comedian, Best Known for "The Daily Show with Jon Stewart" & "Last Week Tonight"

Cynthia Nixon

Actress Known for her Role as Miranda Hobbes on HBO's "Sex and the City"; Former Candidate for Governor of New York

Maria Menounos

CEO & Co-founder of AfterBuzz TV; Former E! News Co-Anchor; Best-selling Author, Journalist & Activist

Garry Kasparov

World Champion Chess Expert & Strategist; Chairman of the Human Rights Foundation based in New York