Bob Goff

Founder of Love Does; New York Times Bestselling Author

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"

Tavis Smiley

Broadcaster, Author, Publisher, Advocate, and Philanthropist

Max Greenfield

Actor Known For "New Girl" & Children's Author

Iyanla Vanzant

New York Times Best-Selling Author, Spiritual Life Coach & Host of "Iyanla Fix My Life"

Jay Pharoah

Actor, Stand-Up Comedian & Impressionist; Former Saturday Night Live Cast Member

Mitt Romney

Former Governor of Massachusetts, 2012 Republican Presidential Nominee and CEO

Mika Brzezinski

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

Kristen Kish

"Top Chef" Host & Season 10 Winner; Cookbook Author

John Ratzenberger

Emmy-Nominated Actor, Entrepreneur & Philanthropist

Vince Gilligan

Creator, "Breaking Bad" & "Better Call Saul"

Archie Manning

Former NFL Great & Ambassador of Goodwill

Trish Regan

Investigative Journalist, Host of "Trish Regan Primetime"

Ree Drummond

Host of "The Pioneer Woman" on the Food Network

Marcus Samuelsson

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

Professor Richard Dawkins

Evolutionary Biologist & Best-Selling Author

Richard Dawkins & Lawrence Krauss ...

Dara Torres

12x Olympic Medalist, NYT Bestselling Author, Entrepreneur & Healthcare Reform Advocate

Dr. John C. Maxwell

Leadership Expert & Author

Herschel Walker

Former NFL Running Back, 1982 Heisman Trophy Winner & Mental Health Awareness Advocate

Mario Lopez

Actor & Entertainment Journalist