Alison Gopnik

Professor & World Leader in Children's Learning and Development

Oscar Pistorius

"Blade Runner"; Double-Amputee Olympic Sprinter

Jeff Martin

Former Apple Marketing Executive in Digital Strategy; Founder of Tribal Brands and Global Investor

Nikesh Arora

SVP and Chief Business Officer, Google

Les Stroud

Star of "Survivorman", Producer, Author, Filmmaker & Activist

Paula White

Senior Pastor of New Destiny Christian Center & Host of "Paula White Today"

Dalia Mogahed

President and CEO, Mogahed Consulting, LLC; Author, "Who Speaks for Islam?"

John Tesh

Inspirational Radio Host, Pianist & Composer; Known for His Radio Show "Intelligence for Your Life"

John Tesh Music - YouTube

Danielle Fishel

Actress, Television Personality & Author

Kathleen Kennedy Townsend

Maryland's 1st Female Lt. Governor

Alvin Poussaint

Psychiatrist, Media Consultant & Author

Naveen Selvadurai

Co-founder, Foursquare

Cher Lloyd

Singer, Rapper and Songwriter Known for her Hit Song, "I Want You Back"

Barton Seaver

Celebrity Chef, Author & Sustainable Food Advocate; National Geographic Fellow; Ocean Conservationist

Dick Beardsley

Motivational Speaker, Suicide Survivor of Loss, Farm Accident Survivor, Prescription Drug Addiction Survivor, Famous 1982 Boston Marathon Runner, Author, Fishing Guide & Innkeeper

Daniel Dennett

Professor of Philosophy at Tufts University

Rachel Sklar

Co-Founder of Change the Ratio & Co-Author, "The 10 Habits of Highly Successful Women"

Richard Engel

NBC News Chief Foreign Correspondent

Sheila Walsh

Author, Speaker, Worship Leader, Television Talk Show Host & Bible Teacher

Kathy Reichs

Bestselling Author, Forensic Anthropologist & Producer of Fox's "Bones"

Colin Mochrie

Former Second City Comic Actor; Star of "Whose Line Is It Anyway?"

Rebecca D. Costa

Sociobiologist & Author of The Watchman's Rattle

Ryan Cabrera

Pop Rock Singer & Musician

David Javerbaum

Award-Winning Comedy Writer & Producer; Known as God's "Secretary" for his Twitter Account @TheTweetOfGod

Marion Jones

Former Track & Field Athlete

Brian Wesbury

Top Economic Forecaster, Economics Editor of The American Spectator & Wall Street Journal Contributor

Danny Trejo

Actor, Author, Activist & Restaurateur; Recovery & Intervention Counselor for Troubled Youth

Antonio Damasio

Director of the Brain Institute

Sanya Richards-Ross

Four-Time Olympic Gold Medalist Sprinter; TV Personality & Entrepreneur

Donovan Bailey

Hall of Fame Track & Field Legend