Wayne Gretzky, Canadian former professional ice hockey player and former head coach.
Danica Patrick, American auto racing driver, model, and advertising spokeswoman.
Michael Jordan, American former professional basketball player and principal owner and chairman of the Charlotte Hornets.
Muhammad Ali, American former professional boxer, generally considered among the greatest heavyweights in the history of the sport.
Sara Blakely, Founder of Spanx and named in Time magazine's "Time 100" annual list of the 100 most influential people in the world.
Alexa von Tobel, founder and CEO of LearnVest and author of the New York Times bestseller "Financially Fearless".
Henry R. Kravis is an American businessman. He is the co-founder of Kohlberg Kravis Roberts & Co.
Elon Reeve Musk, CEO and CTO of SpaceX, CEO and product architect of Tesla Motors.
Sheryl Sandberg, COO of Facebook, one of the 50 "Most Powerful Women in Business" by Fortune Magazine:.
Lolly Daskal, founder of Lead from Within, an executive coaching and consulting firm.
Dan Ariely, professor of Psychology and Behavioral Economics at Duke University and founder of The Center for Advanced Hindsight.
Simon O. Sinek, leadership speaker and author of "Start With Why" and "Leaders Eat Last".
Theodore Roosevelt, the 26th President of the United States.
Harry S. Truman, the 33rd President of the United States.
Abraham Lincoln, the 16th President of the United States.
Thomas Jefferson, principal author of the Declaration of Independence, and third President of the United States.
Walter "Walt" Disney, American entrepreneur, cartoonist, animator, voice actor, and film producer.
Oprah Winfrey, media proprietor, talk show host, actress, producer, and philanthropist.
Steven Spielberg, American director, producer and screenwriter.
Marilyn Monroe, American actress and model.