Judge Greg Mathis

Civil Rights Activist, Television Personality

Keri Glassman

Nutritionist, Author, Founder and CEO of Nutritious Life

Fabio Viviani

Celebrity Chef, Former "Top Chef" Contestant, Cookbook Author

Christy Turlington Burns

Model & Founder of Every Mother Counts; Anti-Smoking Activist

Art Smith

Celebrity Chef, Author & Humanitarian; Served as the Personal Chef of Oprah Winfrey

Richard Thaler

Professor of Behavioral Science and Economics at the University of Chicago; Author of "Misbehaving: The Making of Behavioral Economics"

Richard Thaler: 'We Are Incapable of Learning From the Past ...

Wil Wheaton

Actor, Author & Blogger; Known for "Star Trek: The Next Generation" & "The Big Bang Theory"

Robert Ballard

Renowned Ocean Explorer & Scientist

Daniel Altman

Sports Analytics & Strategy Expert

Robert Kiyosaki

Founder of Rich Dad Company & Author

Robert Kiyosaki Opens Up On Money, Personal Finance & More

Sarah Colonna

Comedian, Author & Actress; Known for "Chelsea Lately" and "Shameless"

Andrew Zimmern

Four-Time James Beard Award-Winning TV Personality, Chef, Writer & Teacher

Seth Godin

Business & Marketing Expert & New York Times Bestselling Author of "Purple Cow," "Linchpin," & "Tribes"

Amanda Seales

Poet, Spoken Word Artist & Media Personality Known for HBO's "Insecure;" Anti-Smoking Activist

Patrick Lencioni

Management Consultant, Founder & President of The Table Group

Overcoming the Five Dysfunctions of a Team

Devin Alexander

New York Times Bestselling Author, Celebrity Chef Known For "Biggest Loser"

Porter Gale

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

Doc Hendley

Global Humanitarian, Clean Water Crusader, Top 10 CNN Hero, Sustainability Advocate

Buddy Valastro

Host of "The Cake Boss" & "The Next Great Baker"

Peter Sims

Entrepreneur & Best-selling Author; Known for "Little Bets: How Breakthrough Ideas Emerge from Small Discoveries"

Black Sheep