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

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

Michelle Obama

Former First Lady of the United States & Bestselling Author

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

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

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"

Michael Strahan

Co-Host of "Good Morning America", "Fox NFL Sunday" Analyst, NFL Hall of Famer & Super Bowl Champion

Michael Strahan and his daughter Isabella, 19, reveal her brain cancer diagnosis in emo...

Steve Harvey

TV Personality & Host of "Family Feud"

Stephanie Izard

Celebrity Chef, Author, Winner of "Top Chef" Season 4 & Partner of Three Award-Winning Chicago Restaurants

Pharrell Williams

Singer-Songwriter, Producer & Entrepreneur; Known for the Hit Single, "Happy"