Heather O'Reilly

Two-Time Olympic Gold Medalist; Midfielder, NWSL North Carolina Courage

Danica McKellar

Mathematician, Writer, Actress, Author & Producer

Paul G. Stoltz

Creator of the Adversity Quotient, Expert Speaker on Human and Organizational Performance

Michael Steele

Conservative Political Commentator & Former Republican Party Politician

Bill Walton

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

Julia Sweeney

Former SNL Cast Member, Monologist, Cancer Survivor & Author

David Suzuki

Environmentalist & Scientist; Co-Founder of the David Suzuki Foundation

Rachel Simmons

Internationally Recognized Educator & Best-Selling Author

Kel Mitchell

Award-Winning Comedic Actor, Best Known for "Kenan & Kel," "Good Burger" and "All That"

Louise Leakey

Paleontologist; National Geographic Explorer-In-Residence

Alan Ritchson

Actor, Model & Singer; Best Known for Amazon's "Reacher" & CW's "Smallville"

Amy Gutmann

United States Ambassador to Germany; Former President of UPenn

Brad Meltzer

Host of History Channel’s "Lost History" & "Brad Meltzer’s Decoded;" New York Times Best-Selling Author

Deitrick Haddon

Gospel Singer-Songwriter, Music Producer, & Pastor; Appears on Oxygen's "Preachers of L.A."

Donnie McClurkin

Award-Winning Gospel Music Singer & Minister

John Ondrasik

Singer-Songwriter and Front Man of "Five For Fighting"; Philanthropist and Family Man

Shaun Robinson

Former Co-Host of Access Hollywood; Advocate for Young Women & Founder of "One Girl: A Million Ways to Make a Difference"

Ginger Zee

Chief Meteorologist for ABC News, Author & Mental Health Advocate

Chasing Helicity: Through the Storm (The Chasing Helicity Series) (Chasing Helicity Ser...

Graham Hill

Founder of Life Edited & TreeHugger.com

Chonda Pierce

Christian Comedian