Al Roker

Co-Host NBC Today Show Media Entrepreneur, Author

Alfonso Ribeiro

Host of America’s Funniest Home Videos, Actor, TV Director, Award-Winning Dancer & Broadway Star

Alfre Woodard

Emmy Award-Winning Actress; Human Rights Activist

Alison Sweeney

Actress & TV Personality Known for "Days of Our Lives" & "The Biggest Loser"

Alonzo Mourning

Naismith Memorial Basketball Hall of Fame Inductee; Co-Founder of Mourning Family Foundation

Amy Smart

Actress, Environmentalist & Co-Founder of Smart House Collections

Amy Van Dyken Rouen

Six-Time Olympic Gold Medalist Swimmer

Anna Kournikova

International Tennis Icon, Health & Fitness Advocate, Former World #1 Doubles Player and #8 Singles Player; Former Co-Host on NBC’s “The Biggest” Loser (2011), Named to the Forbes “Power 100” in 2000

Anna Paquin

Actress Best Known for "True Blood" and for the X-Men Franchise

Antonia Lofaso

Celebrity Chef Specializing in Italian Cuisine and Stars on "Cutthroat Kitchen" and "Top Chef"

Apolo Ohno

Eight-Time Olympic Medalist, Top Short-Track Skater in the United States & NYT Best Selling Author

Bakari Sellers

Author, Attorney, Political Commentator & Youngest African American Elected Official in the U.S.

The Moment

Ben Goldacre

Physician; Best-Selling Academic & Science Writer

Benedict Cumberbatch

English Actor Best Known for "Sherlock;" Ambassador for the Motor Neurone Disease Association

Benicio Del Toro

Puerto Rican-born Spanish Actor and Film Producer.

Bernard Kouchner

Former Minister of Health of France; Founder of Nobel Peace Prize-Winning Médecins Sans Frontières

Bill Clinton

42nd President of the United States; Founder of the William J. Clinton Foundation

Bill Parcells

Former NFL Head Coach & Pro Football Hall of Fame Inductee

Bill Walton

Basketball Legend, Executive Chairman of Connect SD Sport Innovators (SDSI)

Blair Underwood

Award-Winning Actor & Producer