Paula Poundstone

Stand-Up Comedian, Television Personality and Panelist on NPR's "Wait Wait...Don't Tell Me"

Ayah Bdeir

Former CEO & Founder of littleBits

Jesse Schell

Game Designer, CEO of Schell Games & Author of "The Art of Game Design"

David Doubilet

National Geographic Photographer & Founding Member of the International League of Conservation Photographers

Miles O'Brien

Veteran Space, Aviation, Science and Technology Journalist & Filmmaker

Eric Bryant

Author & Church Leader

Slavoj Žižek

Philosopher & International Director of the Birkbeck Institute for the Humanities

Anna Dietrich

‎Entrepreneur; Consultant; Speaker; COO & Co-Founder of Terrafugia, Inc.

James McLurkin

Roboticist, Inventor, Researcher & Teacher

Aaron Yoo

Actor and Director; can be seen in the CW series "The Tomorrow People"

Steve Rubel

Chief Media Ecologist for Edelman and a Professional Blogger

Lawrence Krauss

Theoretical Physicist, Author & Professor

Kenneth Roth

Executive Director at Human Rights Watch

Donna Hanover

Actress & Broadcast Journalist; Former First Lady Of NYC

Sherman Alexie

Poet, Short Story Writer, Novelist, and Performer

Virginia Postrel

Author & Columnist; Writes on The Intersection of Commerce & Culture

David L. Smith

Economist, Futurist & Market Strategist with a Global Perspective

Beau Davidson

Country singer, known for his hit "Blessed," hosted CMT's show "The Singing Bee." Current host of "Daily Blast Live." Performed at 2012 Republican National Convention.

Alfie Kohn

Author & Speaker on Human Behavior, Education, & Parenting; Outspoken Critic of Education's Fixation on Grades

Iris Krasnow

Best-Selling Author & Relationship Expert

Camp Girls: Fireside Lessons on Friendship, Courage, and Loyalty