Cal Ripken, Jr.

President & CEO Ripken Baseball, Inc.; Baseball "Ironman" and Legendary Shortstop from the Baltimore Orioles

Jon Meacham

Pulitzer Prize-Winning Historian & Author

And There Was Light: Abraham Lincoln and the American Struggle

Deval Patrick

Two-term Governor of Massachusetts, Civil Rights Attorney & Business Leader

Ellen Kullman

CEO of Carbon, Former Chair & CEO of DuPont & Former Director of General Motors

John Green

New York Times Bestselling Author, Known for "The Fault in Our Stars," "Looking for Alaska" & "Paper Towns"

Drew Houston

Co-Founder & CEO of Dropbox

How a Billionaire CEO Learns | Drew Houston

James Patterson

NY Times Best-Selling Author & Reading Champion

James Patterson by James Patterson: The Stories of My Life

Keith Olbermann

Award-Winning Host of "Olbermann"

Bill Parcells

Former NFL Head Coach & Pro Football Hall of Fame Inductee

Vernice "FlyGirl" Armour

America’s First Black Female Combat Pilot, Former Marine & Cop; Author of "Zero to Breakthrough”; and Consultant to Business

Leland Melvin

Engineer, Former NASA Astronaut & Former NFL Wide Receiver

NASA astronaut Leland Melvin teaches kids about Webb telescope ...

Bakari Sellers

Author, Attorney, Political Commentator & Youngest African American Elected Official in the U.S.

Ralph Nader

Former Presidential Candidate for the Green Party, Consumer Advocate & Independent

Josh Klein

Hacker & Author of "Hacking Work"

Aidy Bryant

Actress & Comedian Known for "Saturday Night Live" & "Shrill"

Juan Williams

New York Times Best-Selling Author, Fox News Political Analyst, Co-Host of "The Five" & Award-Winning Columnist

Joseph P. Kennedy II

Former Member of the U.S. House of Representatives & Founder of Citizens Energy Corporation

Ron Shaich

Managing Partner of Act III Holdings, Founder & Former Chairman of Panera Bread Company

Chris Matthews

Former Host, Hardball with Chris Matthews, MSNBC

Dr. Marc Lamont Hill

Temple University Professor, BET News Correspondent, Human Rights Activist & Author

Marc Lamont Hill | Dr. Martin Luther King, Jr. Celebration