Billie Jean King

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

Joseph Lubin

Founder & CEO of ConsenSys, Co-Founder of Ethereum

Dan Schulman

President & CEO of PayPal; Former President of American Express

Matt Damon

Actor, Screenwriter & Producer; Co-Founder of Water.org; Expert Advocate on Global Water & Sanitation Crisis

The Worth of Water: Our Story of Chasing Solutions to the World's Greatest Challenge

Annie Lennox

Singer-Songwriter Known for "Sweet Dreams;" Political Activist & Humanitarian

Oprah Winfrey

CEO of Oprah Winfrey Network, Presidential Medal of Freedom Recipient & National Women's Hall of Famer

Tony Robbins

Entrepreneur, Best-Selling Author & Peak Performance Strategist

MC Hammer

Hip Hop Recording Artist, Record Producer & Entrepreneur

Gary Vaynerchuk

Co-Founder & CEO of VaynerMedia

How Gary Vaynerchuk Sold 1 Million Books in 24 Hours, and You Can Too

Chris Hughes

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

Why Facebook co-founder Chris Hughes on 'the free market'

John Legend

EGOT Winning Musician, Producer & Philantropist

Jerry Seinfeld

Comedian, Actor, Writer, & Television/Film Producer

Sir Richard Branson

Businessman & Founder of Virgin Group

Barack Obama

44th President of the United States

Dr. Mehmet Oz

Cardiothoracic Surgeon; Host of "The Dr. Oz Show;" Columbia University Professor & Author

Tom Hanks

Actor, Producer, Writer & Director; Known For "Forrest Gump"

Indra Nooyi

Former Chairman & CEO of PepsiCo

Hillary Clinton

United States Secretary of State, Obama Administration; Former First Lady

Howard Schultz

Executive Chairman & Former CEO of Starbucks; Former Owner of the Seattle SuperSonics

Bono

Lead Singer of U2, Activist & Co-Founder of DATA (Debt, AIDS, Trade, Africa)