Marcus Luttrell

Decorated Navy SEAL & Bestselling Author of "Lone Survivor"

Debra Messing

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

Buddy Valastro

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

Sugar Ray Leonard

Legendary Sports Icon, Olympic Champion and Hall of Famer, Philanthropist, Bestselling Author & Television Personality

Bob Schieffer

Former Moderator of “Face The Nation” & Chief Washington Correspondent for CBS News

Tim Meadows

Actor & Comedian; Known for "Saturday Night Live"

Chris Hughes

Senior Fellow, Institute on Race, Power, and Political Economy; Co-founder of Facebook & Former Editor-in-Chief at The New Republic

Lori Greiner

Self-Made Mogul, Inventor & Entrepreneur Who Has Created 500+ Products; Known for "Shark Tank"

Marc Maron

Standup Comedian, Host of the Podcast "WTF with Marc Maron" & Star of the IFC Comedy "Maron"

Jared Cohen

President, Jigsaw (previously Google Ideas) & Chief Advisor to Alphabet Executive Chairman (former Google CEO) Eric Schmidt

Jenny Slate

Actress, Comedian, Author & Creator of the "Marcel the Shell" Short Films; Known for "Parks & Recreation," "Big Mouth," & "The Secret Life of Pets"

Melissa Rauch

Actress, Writer & Stand-Up Comic, Best known for "The Big Bang Theory"

Maria Menounos

CEO & Co-founder of AfterBuzz TV; Former E! News Co-Anchor; Best-selling Author, Journalist & Type-1 Diabetic

Holly Robinson Peete

TV Personality & Autism Advocate

Sadie Robertson

Motivational Speaker, Best-Selling Author, Owner of Clothing & Accessory Brand "Live Original"; Known for A&E's "Duck Dynasty"

Sinbad

Stand-Up Comedian & Actor

Sinbad is back after a stroke: ‘Miracles happen’

Chris Sacca

Google & Twitter Innovation Guru

Paul Reiser

Actor, Writer & Stand-Up Comedian Known for Portraying Paul Buchman in "Mad About You"

Judge Greg Mathis

Civil Rights Activist, Television Personality

Steven Kotler

NY Times Best-Selling Author, Innovation Leader & Peak Performance Expert; Director of Research for the Flow Genome Project