Leighton Meester

Actress, Singer, Best known as Blair Waldorf in Gossip Girl

Jeffrey Tambor

Emmy Award-Winning Actor of "Arrested Development," "The Hangover" & "Transparent"

Sean Astin

Actor, Director, Voice Artist & Producer Known For "Lord of the Rings"

Robert Herjavec

Executive Producer & Star of ABC’s "Shark Tank;" CEO of Cyderes

Michael J. Fox

Actor, Author and Advocate; Founder, The Michael J. Fox Foundation for Parkinson’s Research

Michael J. Fox on latest Parkinson's research and how he's ...

Brooke Shields

Actress; Model; Women's Health, Aging & Mental Wellness Advocate

Aubrey Plaza

Actress, Comedian & Producer Known for NBC's "Parks and Recreation"

Wil Wheaton

Actor, Author & Blogger; Known for "Star Trek: The Next Generation" & "The Big Bang Theory"

Ed Burns

Actor, Writer, Director, Producer; Author, “Independent Ed: Inside a Career of Big Dreams, Little Movies, and the Twelve Best Days of My Life”

Idris Elba

English Actor, Producer, Rapper and DJ; Best Known for His Roles in "The Wire" & "Luther"

Forest Whitaker

Award-Winning Actor, Producer & Director; Best Known for "Rogue One: A Star Wars Story" & "The Last King of Scotland"

Wilmer Valderrama

Actor, Producer, Activist & Television Personality

Tracee Ellis Ross

Actress, Producer; Chief Executive Officer at PATTERN

Marco Tempest

Cyber-Illusionist

Mark Cuban

Serial Entrepreneur, Investor & Owner of the Dallas Mavericks

Amandla Stenberg

Actor, Singer & Activist Known for "The Hate U Give," "The Hunger Games" & "Everything, Everything"

Issa Rae

Actress, Writer, Director & Producer Known for HBO's "Insecure" & "Awkward Black Girl"

Jane Lynch

Emmy Award-Winning Actress, Known for "Glee" and Hosting "Hollywood Game Night"

Ashton Kutcher

Actor, Producer, Investor & Activist

Kathy Bates

Academy Award-Winning Actress; Cancer Survivor & Chairperson for the Lymphatic Education & Research Network

Liz Nead

Adventure Speaker, Author & Life Coach

Brittany Snow

Actress, Producer, Director, Singer & Co-Founder of Love Is Louder

Jalen Rose

Former ESPN Analyst & NBA Player

Kumail Nanjiani

Stand-Up Comedian & Actor; Known for "The Big Sick"

Alexandra Cousteau

Environmental Activist, Storyteller & Ocean Advocate

Amy Myers Jaffe

Leading Expert on Global Energy Policy & Sustainability

Charlo Greene

Former Reporter, Cannabis Activist, Media and Culture Expert

Ann Mullen

Sociology Professor at the University of Toronto; Social & Gender Inequality Researcher; Author of "Degrees of Inequality"

Graeme le Saux

Lead Presenter for NBC’s coverage of the Barclay’s Premier League; England and Chelsea Football Legend

Peter Aiken

Data Management Thought Leader & Founder of Data Blueprint