Erik Wahl

Internationally Recognized Graffiti Artist, Entrepreneur, & Author of "UNTHINK"

Clay Shirky

Expert on New Technology and Social Media, and How They Shape Culture; Professor and Distinguished Writer in Residence, NYU

Noreena Hertz

Futurist, Economist, Bestselling Author, "Eyes Wide Open: How to Make Smart Decisions in a Confusing World"

Sarah Michelle Gellar

Actress; Known for "The Grudge" and "I Know What You Did Last Summer"

Jonah Berger

Assistant Professor of Marketing at the Wharton School at the University of Pennsylvania & New York Times Bestselling Author of "Contagious"

Ziauddin Yousafzai

Co-founder of the Malala Fund

Wilmer Valderrama

Actor, Best Known for his Role on Fox's Hit Series "That 70's Show"

Adam Braun

Founder & Executive Director, Pencils of Promise

Linda Armstrong Kelly

Motivator & Mother of Lance Armstrong

Mike Huckabee

Politician; Former Governor of Arkansas

Jeremy Rifkin

Leading Global Technologist, Futurist and Authority on World Economic and Environmental Trends

Niecy Nash

Actress & TV Personality

Nicholas Kristof

Pulitzer Prize-Winning New York Times Columnist

Anant Agarwal

President of edX

Ice-T

Rapper & Actor, Law & Order: SVU

Surviving on the Inside | Ice T | TEDxSingSing - YouTube

Tony Plana

Actor, Ugly Betty / Education Advocate

Roger Martin

Premier’s Research Chair in Productivity and Competitiveness, Academic Director, Rotman School of Management, University of Toronto

Paul Orfalea

Founder of Kinko's, Philanthropist-Chairman of the Orfalea Foundation, and a Serial Entrepreneur

Afterburner

US Fighter Pilots & Corporate Teambuilding Speakers

Nia Vardalos

Writer, Producer & Actor Known for "My Big Fat Greek Wedding"

Wendell Pierce

Author and Actor, best known for "The Wire" and HBO's "Treme"

Dr. Ian Smith

Doctor, Media Consultant, & Best-Selling Author

Dan Abrams

Chief Legal Affairs Anchor, ABC News; Founder, Abrams Media

Roxane Gay

Author of Famous Novels "Bad Feminist" and "Untamed State; Writer and Professor

Not That Bad: Dispatches from Rape Culture

Holly Robinson Peete

Celebrated Author, Actress and Advocate for Health and Families

Jenna Bush-Hager

Best-selling Author; Contributing Correspondent, NBC's Today; Chair, UNICEF's Next Generation and Editor-at-Large, Southern Living Magazine

Ana's Story: A Journey of Hope

Mark Sanborn

Leadership, Teamwork & Performance Expert; NYT Bestselling Author; President of Sanborn & Associates

Can a Business Speaker be Funny? Watch This! | Mark Sanborn ...

Ann Bancroft

Pioneering Polar Explorer; Educator; Activist for Women and Girls

Sean Astin

American Film Actor, Director, Voice Artist and Producer; Best Known for his Role as Samwise Gamgee in the "Lord of the Rings"; Currently starring on FX Network's "The Strain"

Keni Thomas

Ranger in the "Blackhawk Down" Mission, Award-Winning Country Music Artist, Spokesperson for The Hero Fund