Donna Brazile

Veteran Political Strategist, Best-Selling Author & Former Interim Chair of the Democratic National Committee

Bill Rancic

"The Apprentice" Winner; Entrepreneur; Star of "Giuliana & Bill"

Mike North, PhD

Science & Engineering Expert; CEO/Founder ReAllocate, Inc., Innovator & Master of "Nano"

Joyce Maynard

Journalist & Best-Selling Author

What cancer taught me about the nature of love | Joyce Maynard | TEDx

Hyeonseo Lee

Advocate for the Human Rights of North Koreans as Political Refugees

Erin Gruwell

Founder & Executive Director of the Freedom Writers Foundation; Education Reform Advocate

Antwone Fisher

Child Advocate, Bestselling Author, Screenwriter & Lecturer

Ali Vincent

First Female Winner of "The Biggest Loser"

Ashley Michelle Berry

Anti-Bullying Advocate, Actress, TV & Radio Host

Damon Horowitz

Philosophy Professor & Serial Entrepreneur, Former In-House Philosopher at Google

Kari Byron

Former Host of Discovery Channel's "Mythbusters" & Author of "Crash Test Girl;" Director of the National STEM Festival

Joe Theismann

World Champion Quarterback, Broadcaster & Entrepreneur

Julianne Malveaux

Economist, Author & Political Commentator; President Emerita of Bennett College for Women

Claire Diaz-Ortiz

Author, Speaker, Advisor to Startups & Social Enterprises; Former Leader of Social Innovation at Twitter

Soleil Moon Frye

Social Media Expert, Entrepreneur & Eco-Leader; Author of "Happy Chaos"; Alzheimer's Awareness Advocate

Carolyn Kepcher

CEO of Carolyn & Co; Former Co-Star of NBC’s "The Apprentice;" Best-Selling Author of Carolyn 101: Business Lessons from The Apprentice's Straight Shooter"

Matt Roloff

Star of "Little People, Big World"

Jerry Mathers

Actor; Best Known for "Leave It to Beaver"

Ed Begley Jr.

Environmental Activist & Emmy Award-Nominated Actor

Lauren Cohan

Actress; Best Known as Maggie Greene on "The Walking Dead"