Marcus Luttrell

Decorated Navy SEAL & Bestselling Author of "Lone Survivor"

Dinesh D'Souza

Best-Selling Author, Filmmaker & Conservative Political Commentator

George Foreman

World Boxing Champion & Entrepreneur

Bernard Harris

Former NASA Astronaut; President & CEO of Vesalius Ventures; First African-American to Perform a Spacewalk

Donald Driver

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

Yolanda Adams

Grammy Award-Winning Gospel Singer, Author, Radio Host & Philanthropist

Carl Lewis

9-Time Olympic Gold Medalist in Track & Field; Founder of The Carl Lewis Foundation

Israel Houghton

Christian Worship Leader

Andy Pettitte

Former Major League Baseball Pitcher; Five-Time World Series Champion & MLB's All-Time Postseason Wins Leader

Andy Pettitte - Liberty University Convocation - YouTube

Scott Parazynski

Astronaut, Physician & Everest Summiter

Rick Tumlinson

One of the World's Top Space Visionaries; Founder of the Commercial Space Movement; Founding Trustee of the XPrize

Kevin Sumlin

Head Football Coach of Arizona Wildcats

Peter Duncan

Executive Chairman and Founder of MicroSeismic, Inc

Hakeem Olajuwon

NBA Hall of Famer; President and Founder of The Dream Agency

Living the Dream My Life and Basketball

Mathew Knowles

Motivational Speaker, Serial Entrepreneur, Activist, Author, Legendary Music Mogul, Marketing, Professor, Sales & Entrepreneurship Expert

Booker T

Professional Wrestler & Wrestling Commentator

Matt Mullenweg

Co-Founder of WordPress, Founder & CEO of Automattic

Ron Paul

Political Speaker, Former United States Congressman & 2012 Republican Presidential Candidate

Bun B

Rapper Known for Having Been Half of the Southern Rap Duo UGK; Guest Lecturer at Rice University

Gregory H. “Box” Johnson

Former NASA Astronaut, Retired Air Force Colonel & Past President of the Center for the Advancement of Science in Space