Sean Astin

Actor, Director, Voice Artist & Producer Known For "Lord of the Rings"

Bob Schieffer

Former Moderator of “Face The Nation” & Chief Washington Correspondent for CBS News

Kal Penn

Actor, Writer, Producer & Former Associate Director of the White House Office of Public Engagement

George P. Bush

Politician & Land Commissioner of Texas

Keith Olbermann

Award-Winning Host of "Olbermann"

Joseph P. Kennedy II

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

Rob Waldo Waldman

Decorated Fighter Pilot; Power of Relationships & Trust Advocate

John Stossel

Emmy-Award Winning Journalist

Ben Stein

Political Economist, Commentator, Author & Actor

Norman Ornstein

Bestselling Author, Political Analyst & Resident Scholar at the American Enterprise Institute

Ralph Nader

Consumer Advocate, Lawyer & Author; Former Independent Presidential Candidate

Frank Luntz

Political Pollster & Communication Expert

John Kasich

Former Governor of Ohio

Bethenny Frankel

Entrepreneur, Reality TV Star & Bestselling Author; Founder of Skinnygirl & BStrong Disaster Relief

Anderson Cooper

Journalist, TV Personality, Anchor of CNN's "Anderson Cooper 360°"

Nick Clooney

Journalist & Activist

Jon Steinberg

CEO of Future Plc., Founder of Cheddar; Former President & COO of Buzzfeed; Former CEO of Daily Mail.com in North America

Hasan Minhaj

Comedian, Actor, Writer & Star of "Patriot Act with Hasan Minhaj"

Trevor Noah

Emmy Award-Winning Comedian & Bestselling Author; Former Host of "The Daily Show"

Ronan Farrow

Investigative Reporter, Activist & Lawyer

Ari Melber

Emmy Award-Winning Journalist, MSNBC Chief Legal Correspondent & Host of "The Beat with Ari Melber"

Watch The Beat with Ari Melber Highlights: Sept. 11

Steve Clemons

Founding Editor at Large at SEMAFOR, Contributing Editor at The Hill & Host of 'The Bottom Line'

Justin Trudeau

Prime Minister of Canada

Rye Barcott

Co-Founder & CEO of With Honor, Veteran and Author of "It Happened on the Way to War"

Edward Tenner

Smithsonian Institution Distinguished Scholar & Author of "Why Things Bite Back" and "Our Own Devices"

Michael Gelb

Educator, Innovation & Creativity Expert; Author of "How To Think Like Leonardo Da Vinci"

Alex Banayan

Author & World’s Youngest Venture Capitalist

John Zogby

Trendspotter & Leading Pollster

Jalen Rose

Former ESPN Analyst & NBA Player

Cory Booker

U.S. Senator from New Jersey; Author of "United" & Former Democratic Presidential Candidate