Peter Diamandis

Founder & Executive Chairman of the XPRIZE Foundation; Author; Named One of The World's 50 Greatest Leaders

Erin Brockovich

Consumer Advocate, Author, TV Host & Environmental Activist

Kathryn Bigelow

First Woman to Win an Academy Award for Best Director; Known for "Zero Dark Thirty" & "The Hurt Locker"

Lisa Ling

Award-Winning Journalist & Producer for CBS News

Bill Nye

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

David Agus

Co-Founder of Navigenics, Author of "The End of Illness" & Host of "The Checkup with Dr. David Agus"; Professor of Medicine & Engineering at the University of Southern California

The Book of Animal Secrets

Peter Guber

Executive, Entrepreneur & NYT Bestselling Author; Operating Owner of the 3-Time NBA Champion Golden State Warriors

LeVar Burton

Literacy Advocate & Actor Known for "Roots," "Star Trek" & "Reading Rainbow"

Greg Louganis

4x Olympic Gold Medal Diver; LGBTQ Activist & Author

Sherry Lansing

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

Jesse Williams

Director, Producer, Activist & Actor Known for "Grey's Anatomy"

Gloria Allred

Renowned Women's Rights Attorney; Subject of Netflix Documentary "Seeing Allred"

Joseph Gordon-Levitt

Founder of HitRecord & Actor Known for "Inception" & "The Dark Knight Rises"

Laila Ali

Undefeated Four-Time World Champion Boxer & Lifestyle Expert; Heart Disease Awareness Advocate

Tavis Smiley

Broadcaster, Author, Publisher, Advocate, and Philanthropist

Patricia Heaton

Emmy Award-Winning Actress Known for "Everybody Loves Raymond" & "The Middle"

Rob Riggle

Actor, Comedian, Writer, Producer, Director & Former U.S. Marine

Tim Meadows

Actor & Comedian; Known for "Saturday Night Live"

Kal Penn

Actor, Writer, Producer & Former Associate Director of the White House Office of Public Engagement

Mario Lopez

Actor & Entertainment Journalist