Jonah Berger

Marketing Professor at the Wharton School at the University of Pennsylvania & Internationally Best-Selling Author

Richard Simmons

Fitness Instructor, Actor, Video Producer Known for "Sweatin' to the Oldies" Aerobics Videos

Kristen Schaal

Actress, Stand-Up Comedian & Writer

Kristen Schaal's Daughter Is Not A Kristen Schaal Fan | CONAN

Jay Manuel

Former Judge on "America's Next Top Model", Host of Canada's "America's Next Top Model"

Karen Finerman

CEO & Co-founder of Metropolitan Capital Advisors, Author

Nick Thune

Stand-Up Comedian, Actor & Musician

Muhammad Yunus

Nobel Peace Prize Laureate & Founder of Grameen Bank; Internationally Recognized for Work in Poverty Alleviation

Laverne Cox

Award-Winning Transgender Actress, Producer & Equal Rights Advocate

Dambisa Moyo

Global Economist, Author & Investor in the Future

Neal Petersen

History-Making Extreme Adventurer, Award-Winning Author & Global Investor

Marcus Luttrell

Decorated Navy SEAL & Bestselling Author of "Lone Survivor"

Alicia Silverstone

Actress & Animal Rights Activist

Terrence Jenkins

Actor and TV Host

Robert Kriegel

Expert in Sports & Performance Psychology

Josh McDowell

Christian Apologist, Evangelist & Best-Selling Author

Chelsea Peretti

Comedian, Writer & Actress Known for "Brooklyn Nine-Nine"

Emma Bell

Actress Who Played Amy in "The Walking Dead" and Emma in the TNT Drama Series "Dallas"

Adam Richman

Host of Man v. Food & Man v. Nation

Clinton Kelly

Host of ABC's "The Chew"

Jalen Rose

Former ESPN Analyst & NBA Player

Harry Shum, Jr.

Dancer, Actor, Choreographer and Singer; Best known for his role as Mike Chang on 'Glee'

Rebecca Walker

Bestselling Author & Founder of the Third Wave Feminism Movement

What's Your Story? with author Rebecca Walker

Alexandra Cousteau

Environmental Activist, Storyteller & Ocean Advocate

Brian Tracy

Authority on Human Potential & Personal Effectiveness; Prolific Author of Bestselling Business Books

Jason Alexander

Actor, Writer & Director; Best Known for His Work on "Seinfeld"

Dr. Francis Collins

Head, Molecular Genetics Section, National Human Genome Research Institute; 16th Director, National Institutes of Health

Dr. Francis Collins: "I don't see a conflict" between science and faith ...

Paul Reiser

Actor, Writer & Stand-Up Comedian Known for Portraying Paul Buchman in "Mad About You"

Morton Kondracke

Political Commentator & Columnist

Ian Jukes

Educator & Technology Expert; Co-Founder of Infosavvy

Boris Kodjoe

Film and Television Actor; Model; "Soul Food" and "The Gospel"