Simon Sinek

World-Renowned Leadership Expert & Best-Selling Author

John Legend

EGOT Winning Musician, Producer & Philantropist

Mika Brzezinski

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

Dr. Jill Bolte Taylor

Scientist, Author & CEO of My Stroke of Insight, Inc.

Benjamin Zander

Conductor of the Boston Philharmonic Orchestra; Celebrated Leadership & Performance Expert

Steve Wozniak

Co-Founder of Apple Computer, Inc.

Henry Winkler

Actor, Producer, Director & Best-Selling Author; Best Known for "Happy Days"

Venus Williams

Professional Tennis Player, Four-Time Olympic Gold Medalist, Equal Pay Activist, Author & Entrepreneur

Herschel Walker

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

George Takei

Actor, Social Justice Activist & Social Media Mega-Power

Michael Strahan

Co-Host of "Good Morning America", "Fox NFL Sunday" Analyst, NFL Hall of Famer & Super Bowl Champion

Michael Strahan and his daughter Isabella, 19, reveal her brain cancer diagnosis in emo...

Chris Spielman

Former All-Star Linebacker, Special Assistant for the Detroit Lions & Breast Cancer Awareness Advocate

Ian Somerhalder

Actor Known for "The Vampire Diaries"; Animal & Environmental Advocate; Founder of The Ian Somerhalder Foundation

Nancy Snyderman, MD

Retired Surgeon & Award-Winning Medical Journalist

William Shatner

Emmy-Award Winning Actor, Known for "Star Trek" & "Boston Legal"

Joe Scarborough

Co-Host of MSNBC's "Morning Joe" & Former U.S. Congressman

Adam Savage

Industrial & Special Effects Designer, Educator & Co-Host of "MythBusters"

Deion Sanders

Head Football Coach at the University of Colorado Boulder; NFL Hall of Famer, Two-Time Super Bowl Champion, and Broadcast Analyst

Elevate and Dominate: 21 Ways to Win On and Off the Field

Marcus Samuelsson

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

Dr. Michael Roizen

Chief Wellness Officer at the Cleveland Clinic & Co-Founder of RealAge; Anesthesiologist & Former FDA Advisory Committee Chair

Jim Rogers

Investment Expert & Author of "Street Smarts: Adventures on the Road and in the Markets"

Rob Riggle

Actor, Comedian, Writer, Producer, Director & Former U.S. Marine

Retta

Stand-Up Comedian & Actress Known for "Parks and Recreation"

Robert Reich

Economic Analyst, CNBC Contributor, Professor, Author, Advisor to Presidents & Former Secretary of Labor

Bill Nye

"The Science Guy"; Science Communicator, TV Presenter & Mechanical Engineer; Climate Change Activist

Rita Moreno

Award-Winning Actress, Dancer, Singer; Health Advocate & New York Times Bestselling Author

Geoffrey Moore

Organizational Theorist, Management Consultant & Author

Danny Meyer

Founder of Shake Shack; Leadership Speaker & Employee Wellness Advocate

Aasif Mandvi

Comedic Actor & Former Correspondent for "The Daily Show"

Amory Lovins

Co-Founder & Chairman Emeritus of Rocky Mountain Institute