Dan Ariely

Behavioral Economist; Professor at Duke University; Author; Founding Member of The Center for Advanced Hindsight

Roland Martin

Award-Winning Journalist & Media Personality, Author of "Listening to the Spirit Within: 50 Perspectives on Faith"

Alice Waters

Executive Chef, Founder & Owner of Chez Panisse; Sustainable Agriculture Advocate

Kanya Balakrishna

Co-Founder & CEO of The Future Project; Youth Empowerment & Education Advocate

Jacqueline Novogratz

Founder & CEO of Acumen Fund

Pharrell Williams

Singer-Songwriter, Producer & Entrepreneur; Known for the Hit Single, "Happy"

Ashley Michelle Berry

Anti-Bullying Advocate, Actress, TV & Radio Host

Nick Vujicic

Motivational Speaker, NY Times Best-Selling Author, Founder & CEO of Life Without Limbs

Micah Solomon

Customer Experience Consultant & Bestselling Author

Micah Solomon's MAMA™ method of Customer Service Recovery

Janine di Giovanni

Author, Award-Winning Foreign & War Correspondent; Visiting Fellow at Yale Law School & Executive Director The Reckoning Project

Seriously Entertaining: Janine di Giovanni on "All That Glitters"

Ashton Kutcher

Actor, Producer, Investor & Activist

Jane Lynch

Emmy Award-Winning Actress, Known for "Glee" and Hosting "Hollywood Game Night"

Ashley Rhodes-Courter

International Child Welfare Advocate, Master of Social Work, Foster Parent & Author of the Best-Selling Memoir "Three Little Words"

Wendy Kopp

CEO of Teach For All & Founder of Teach For America; Childhood Education Advocate

Ben Rattray

Founder & Executive Chair of Change.org

Porter Gale

Bestselling Author of "Your Network Is Your Net Worth" & Former Vice President of Marketing at Virgin America

Chaz Bono

Transgender, LGBTQ Rights Advocate, Author, Speaker

Nicholas de Wolff

Digital Media & Brand Strategy; Economic & Social Transformation Advisor; Sustainable Business Activist

Josh McDowell

Christian Apologist, Evangelist & Best-Selling Author

Charles Best

Founder and Former CEO, DonorsChoose.org

From Classroom To Crowdfunding

Tom Nelson

Author and President of Made To Flourish

Lauren Bush

Founder & CEO of FEED Projects; Model & Fashion Designer; Granddaughter of Former President George H. W. Bush

Brad Cohen

President of the Brad Cohen Tourette Foundation & School Principal

Wes Welker

Former NFL Wide Receiver; Wide Receivers Coach for the Miami Dolphins

Reggie Watts

Comedian & Musician; Bandleader of the IFC Talk Show "Comedy Bang! Bang!"

Kimberly Lacy

TV Personality of HGTV's "Curb Appeal: The Block"; Artisan Painter, Home Decor and Landscape Designer

Matthew Sandusky

Child Sexual Abuse Survivor, Motivational Speaker & Founder of Peaceful Hearts Foundation

Erik Compton

Professional golfer who has undergone two heart transplants