Erin Brockovich

Consumer Advocate, Author, TV Host & Environmental Activist

Lisa Ling

Award-Winning Journalist & Producer for CBS News

John Legend

EGOT Winning Musician, Producer & Philantropist

Adam Savage

Industrial & Special Effects Designer, Educator & Co-Host of "MythBusters"

Ashley Judd

Actress, Activist & Humanitarian

LeVar Burton

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

Alexa von Tobel

Founder & CEO of Learnvest.com; New York Times Bestseller Author of "Financially Fearless"

Jimmy Wales

Founder of Wikipedia & Wikitribune

Joe Scarborough

Co-Host of MSNBC's "Morning Joe" & Former U.S. Congressman

Gabrielle Bernstein

Founder of HerFuture.com & New-York Times Best-Selling Author

Mae Jemison

First Black Woman in Space & Former NASA Astronaut; National Women's & International Space Hall of Famer Founder, 100 Year Starship

Michelle Obama

Former First Lady of the United States & Bestselling Author

Kate McKinnon

Emmy Award-Winning Comedian & Former Cast Member of "Saturday Night Live"

Joseph Gordon-Levitt

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

Marcus Buckingham

Peak Performance Expert, Best-Selling Author, Researcher & Strengths Revolutionist

Gabby Douglas

First African-American to Win Olympic Gold Medal for Gymnastics; Author of New York Times Bestseller "Grace, Gold & Glory: My Leap of Faith"

Rick Santorum

Former Member of the U.S. Senate

Tina Fey

Actress, Comedian, Writer & Producer; Known for "Mean Girls" and "30 Rock"

Gloria Steinem

Feminist Writer, Activist & Organizer; Co-Founder of New York Magazine & Ms. Magazine

Jeannie Mai

Fashion Correspondent Known for "The Real" & "How Do I Look?", Two-Time NAACP Image Awards and Daytime Emmy Award Winner

Stephen Colbert

Host of "The Late Show with Stephen Colbert"

Kevin Bacon

Actor, Musician, Founder of Sixdegrees.org

Oprah Winfrey

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

Oprah Winfrey: Broken Open | Oprah's Super Soul | OWN Podcasts ...

Mika Brzezinski

Co-host of MSNBC's "Morning Joe" & Bestselling Author; Founder of "Know Your Value"

Richard Thaler

Professor of Behavioral Science and Economics at the University of Chicago; Author of "Misbehaving: The Making of Behavioral Economics"

Richard Thaler: 'We Are Incapable of Learning From the Past ...

Andrew Zimmern

Four-Time James Beard Award-Winning TV Personality, Chef, Writer & Teacher

Marcus Samuelsson

James Beard Award-Winning Chef & Owner of the Red Rooster Restaurant

Buddy Valastro

Host of "The Cake Boss" & "The Next Great Baker"

Dan Levy

Emmy-Winning Showrunner, Writer, Actor, Director & Producer, Best Known for "Schitt's Creek"

Steven Yeun

Award-Winning Actor Known For "Beef," "The Walking Dead" & "Minari"; First Asian-American Actor to Receive Academy Award for Best Actor Nomination

Steven Yeun Wins Male Actor In A Limited Series, Anthology Series