Bill Rancic

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

Mike North, PhD

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

Steve Wozniak

Co-Founder of Apple Computer, Inc.

Judy Smith

America's Premier Crisis Management Expert; Inspiration for ABC's "Scandal"

Judy Smith - Career Advice

Giuliana Rancic

Entertainment Journalist & Breast Cancer Survivor

J.R. Martinez

Actor, Best-Selling Author, Motivational Speaker, Advocate & Wounded U.S. Army Veteran

Hyeonseo Lee

Advocate for the Human Rights of North Koreans as Political Refugees

Lisa Ling

Award-Winning Journalist & Producer for CBS News

Bill Nye

"The Science Guy"; Science Communicator, TV Presenter & Mechanical Engineer; Climate Change Activist

Ali Vincent

First Female Winner of "The Biggest Loser"

Damon Horowitz

Philosophy, Artificial Intelligence & Cognitive Science Professor; Serial Entrepreneur & Former In-House Philosopher at Google

Ben Stein

Political Economist, Commentator, Author & Actor

Joe Theismann

World Champion Quarterback, Broadcaster & Entrepreneur

Nev Schulman

Producer, Actor, Photographer & TV Host Known for MTV's "Catfish: The TV Show"

Julianne Malveaux

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

Montel Williams

Emmy Award-Winning Talk Show Host; Multiple Sclerosis Survivor; Health Equity & Veteran Advocate

B.J. Novak

Actor, Writer & Comedian Known for "The Office"

Adam Savage

Industrial & Special Effects Designer, Educator & Co-Host of "MythBusters"

Ashley Judd

Actress, Activist & Humanitarian

George Takei

Actor, Social Justice Activist & Social Media Mega-Power