Jim Clifton

CEO of Gallup

Mark Ruffalo

Actor, Director, Producer, Screenwriter & Environmental Activist

Gigi Hadid

Fashion Model and TV Personality

Charles Barkley

Retired NBA Power Forward, Analyst on "Inside the NBA," One of the NBA's 50 Greatest Players of All Time

Cameron Russell

American Fashion Model & TED Talker

Ram Shriram

Founder of Sheralpo; Founding Board Member & One of the First Investors in Google

Roland Fryer

Professor of Economics at Harvard University.

Roland Fryer on studying difficult questions with economics

Mo'Nique

Comedienne, Actress, TV Show Host and Author; Known for "The Parkers"

Emma Watson

Actress, Model & Activist; UN Women Goodwill Ambassador; Co-Founder of the HeForShe Campaign

Gladys Knight

Singer-Songwriter & Actress

Gael Garcia Bernal

Award-Winning Actor Known for "Mozart in the Jungle" & "Y Tu Mama Tambien"

Brooklyn Decker

Actress, Model & Tech Entrepreneur

Laurene Powell Jobs

Founder & Chair of Emerson Collective Foundation; President of the Board at College Track; Widow & Heir of Steve Jobs

The American Arctic

Meghan McCain

Political Columnist, Author & Award-Winning Blogger

Yao Ming

President of Chinese Basketball Association, NBA Hall-of-Famer & Founder of the Yao Family Wines

Yao Ming's 2016 Hall of Fame Induction Speech

Alan Blinder

Economic Commentator at CNBC, Former Vice Chairman at the Board of Governors for the Federal Reserve and Princeton University Professor

Ashley Graham

Model, Entrepreneur & Body Image Activist

Josette Sheeran

President and CEO of the Asia Society; Former Vice Chairman of the World Economic Forum.

Sophia Grace Brownlee

Youtube Sensation and Frequent Guest on The Ellen Show

Courtney B. Vance

Actor Best Known for His Role as Ron Carver in NBC's "Law & Order: Criminal Intent"