Jamie-Lynn Sigler

Actress Known for "The Sopranos" & "Big Sky" & Co-Host of "MeSsy"; Spokesperson for Eating Disorders & Multiple Sclerosis Survivor

Gladys Knight

Singer-Songwriter & Actress

Maura Tierney

Golden Globe Award-Winning Actress & Breast Cancer Survivor

Isaac Mizrahi

Fashion Designer & Former Creative Director of Liz Claiborne

Oscar Arias

Former President of Costa Rica & Nobel Laureate

Tom Selleck

Award-Winning Actor Known for "Magnum P.I." & "Blue Bloods"; Author of "You Never Know: A Memoir"

Tom Selleck Admits He Was Fired After One Episode of Charlie's Angels

Howie Mandel

Comedian, Actor, TV Host & Judge on "America's Got Talent"

Adam Sandler

Actor, Comedian, Producer & Musician

Rem Koolhaas

Dutch Architect, Architectural Theorist, Urbanist and Professor in Practice of Architecture and Urban Design at the Graduate School of Design at Harvard University

Vanessa Williams

Grammy Nominated Singer, Actress & Philanthropist

Seth Priebatsch

Princeton Drop-out, Founder of Google Ventures Funded SCVNGR

Judith Light

Award Winning Actress & Activist

Laurence Tribe

Carl M. Loeb University Professor at Harvard Law School & Author

Donald Driver

NFL Super Bowl Champion, Children's Author, "Dancing With the Stars" Winner & Family Man

Will Wright

Interactive Entertainment Designer

Mike Tyson

Former Boxing Heavyweight Champion; Entrepreneur & Philanthropist

George Lopez

Stand-Up Comedian, Television Personality, Actor & Kidney Disease Spokesperson

Robert Greene

New York Times Bestselling Author of "The 48 Laws of Power," "The Art of Seduction," "The 33 Strategies of War," and "The 50th Law"

Sam Harris

Neuroscientist, Philosopher & Bestselling Author

Wes Anderson

Award-Winning Filmmaker Known for "The Grand Budapest Hotel," "Isle of Dogs" & "Asteroid City"