Van Jones

CEO of REFORM Alliance, CNN host, Emmy Award-winning Producer & NY Times Best-Selling Author

America Ferrera

Award-Winning Actress, Producer & Humanitarian

Lisa Ling

Award-Winning Journalist & Producer for CBS News

Bill Nye

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

Ben Stein

Political Economist, Commentator, Author & Actor

B.J. Novak

Actor, Writer & Comedian Known for "The Office"

Sophia Bush

Actress, Humanitarian & Author

Mayim Bialik

Neuroscientist, Mental Health Advocate & Actress Known for "The Big Bang Theory"

George Takei

Actor, Social Justice Activist & Social Media Mega-Power

Chris Hardwick

Creator of Nerdist Podcast and Website, Stand up Comedian and Current Host of "The Walking Dead" after show, "Talking Dead"

Peter Guber

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

Geena Davis

Award-Winning Actress, Gender Equality Activist & Philanthropist

LeVar Burton

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

T.J. Miller

Actor and Stand-Up Comedian, Currently Starring in HBO's 'Silicon Valley'

Common

Award-Winning Artist, Actor, Producer, Musician & Writer

And Then We Rise: A Guide to Loving and Taking Care of Self

DeVon Franklin

Award-Winning Producer, New York Times Bestselling Author & Motivational Speaker

Mark Cuban

Serial Entrepreneur, Investor & Owner of the Dallas Mavericks

Jerry Mathers

Actor; Best Known for "Leave It to Beaver"

Derek Hough

Dancer, NYT Bestselling Author, Emmy Award Winner for Outstanding Choreography & Six-Time Champion of ABC's "Dancing with the Stars"

Ed Begley Jr.

Environmental Activist & Emmy Award-Nominated Actor