Dewitt Jones

Motivator & Photojournalist

Sam Silverstein

Organizational Culture Expert, Founder of The Accountability Institute™ & Creator of The Culture Audit™

Gregory Boyle

Roman Catholic Priest of the Jesuit Order; Founder of Homeboy Industries

Howard A. Tullman

Executive Director of the Kaplan Institute at Illinois Tech & Former CEO of 1871

Peter Shankman

Thought-Leader in Communication & Customer Service

Robert Atkinson

Founder & President of the Information Technology and Innovation Foundation

Kunal Nayyar

Actor Known for "The Big Bang Theory"

Steve Martin

Iconic Actor, Comedian, Author, Playwright & Musician

Timothy Patrick McCarthy

Award-Winning Scholar, Educator & Human Rights Activist; Faculty Member at Harvard University's Graduate School of Education and John F. Kennedy School of Government

Reckoning with History: Unfinished Stories of American Freedom

Slavoj Žižek

Philosopher & International Director of the Birkbeck Institute for the Humanities

Jose Antonio Vargas

Journalist, Filmmaker & Immigration Activist

Melody Barnes

Executive Director Karsh Institute of Democracy at UVA, Professor at the Miller Center & Former Director of the White House Domestic Policy Council

Timothy Shriver

Chairman & CEO of the Special Olympics

Lena Dunham

Writer, Director, Actor & Producer Best Known for HBO’s “Girls”

Rachel Dratch

Comedian, Actress, and Former SNL Cast Member

Costas Markides

Business & Strategy Expert

Questlove

Musician, Music Journalist, Producer & Drummer for The Roots

Rick Steves

TV Host, Bestselling Guidebook Author & Leading Authority on European Travel

Travel as a Political Act with Rick Steves

Robin Wright

Foreign Policy Analyst, Journalist & Author of "Rock the Casbah: Rage and Rebellion across the Islamic World"

Michel Martin

Weekend Host of "All Things Considered" & Former Host of "Tell Me More"