Jason Segel

Writer & Actor Known for His Role in "How I Met Your Mother," "Forgetting Sarah Marshall" & "I Love You, Man"

Sam Harris

Neuroscientist, Philosopher & Bestselling Author

Parag Khanna

Managing Partner at FutureMap; Strategic Advisor to Governments & Global Companies; Bestselling Author; TED Speaker

Lawrence Summers

Professor & Former President of Harvard University; Former Secretary of the Treasury, Director of the National Economic Council, & Chief Economist of the World Bank

Mitt Romney

Former Governor of Massachusetts, 2012 Republican Presidential Nominee and CEO

Al Michaels

NBC Sports Sunday Night Football Broadcaster

Stephen Breyer

Former Associate Justice of the Supreme Court of the United States

A look at Justice Stephen Breyer's career and opinions on the bench

Laurence Tribe

Carl M. Loeb University Professor at Harvard Law School & Author

Jemele Hill

Emmy Award-Winning Journalist, Author & Host of "Jemele Hill Is Unbothered"

Kenny Mayne

Former ESPN Anchor/Reporter, "The Mayne Event" Segments

Dr. Michio Kaku

World-Renowned Futurist & Theoretical Physicist

Ken Burns

Historian & Award-Winning Documentary Filmmaker

Paola Antonelli

Senior Curator at the Museum of Modern Art in the Department of Architecture & Design

Dave Portnoy

Owner and Founder of Barstool Sports

Pat Croce

Mega-Entrepreneur & Former NBA Team Owner

Jason Heyward

Former MLB Right Fielder for the Chicago Cubs

Spike Feresten

Screenwriter, Host of "Car Matchmaker"

John Hodgman

Resident Expert on "The Daily Show with Trevor Noah", Author, Humorist

Joe Tessitore

Play-by-Play Commentator, Studio Host

Russell Simmons

Entrepreneur & Philanthropist