Keke Palmer

Actress & Youngest Talk Show Host in TV History

Marcus Luttrell

Decorated Navy SEAL & Bestselling Author of "Lone Survivor"

Deepak Chopra

Co-Founder of The Chopra Center for Wellbeing

Mayim Bialik

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

Wil Wheaton

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

Sean Astin

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

Amy Schumer

Award-Winning Actress & Comedian; Author of "The Girl with the Lower Back Tattoo;" Feminist Advocate

Amy Schumer diagnosed with rare health disorder: ‘Something was wrong’

Candace Cameron Bure

Women & Youth Speaker Best Known for Her Role on "Full House" & "Fuller House"; Former Co-Star on "The View"

Malaak Compton

Activist & Philanthropist

Sarah Michelle Gellar

Television & Film Actress, Co-Founder of Foodstirs

Kate Walsh

Film & TV Actress known for starring in both "Grey's Anatomy" and "Private Practice"

Nick Vujicic

Motivational Speaker, NY Times Best-Selling Author, Founder & CEO of Life Without Limbs

Jeffrey Tambor

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

Jodie Sweetin

Entrepreneur, Actress, Producer & Author

Richard Simmons

Fitness Instructor, Actor, Video Producer Known for "Sweatin' to the Oldies" Aerobics Videos

Debra Messing

Emmy Award-Winning Actress & Global Ambassador for PSI/Youth AIDS

Judge Greg Mathis

Civil Rights Activist, Television Personality

Paula Abdul

American Singer-Songwriter, Dancer, Choreographer & TV Personality