Joseph Stiglitz

American Economist, Professor at Columbia University & Nobel Memorial Prize in Economic Sciences 2001

Judge Greg Mathis

Civil Rights Activist, Television Personality

Julie Taymor

Film, Opera, & Academy Award-Nominated Theater Director

Karrueche Tran

Model

Kate Walsh

Film & TV Actress known for starring in both "Grey's Anatomy" and "Private Practice"

Kathy Bates

Academy Award-Winning Actress; Cancer Survivor & Chairperson for the Lymphatic Education & Research Network

Kathy Najimy

Award-Winning Actress & Activist

Keenen Ivory Wayans

Comedian, Director & Writer; Known for "White Chicks" and "In Living Color"

Kelly Osbourne

Fashion Designer, Singer & Actress; Former Contributor to E!'s "Fashion Police"; Daughter of Ozzy and Sharon Osbourne

Kevin Colleran

Managing Director of Slow Ventures & Former Facebook Executive

Kristen Schaal

Actress, Stand-Up Comedian & Writer

Kristen Schaal's Daughter Is Not A Kristen Schaal Fan | CONAN

Lawrence O'Donnell

Political Analyst, Author & Host of "The Last Word with Lawrence O'Donnell"

Lee Daniels

Director, Writer & Producer Known for "Precious" and "Empire"; Creator of Lee Daniels Entertainment

Lori Greiner

Self-Made Mogul, Inventor & Entrepreneur Who Has Created 500+ Products; Known for "Shark Tank"

Malaak Compton

Activist & Philanthropist

Marc Maron

Standup Comedian, Host of the Podcast "WTF with Marc Maron" & Star of the IFC Comedy "Maron"

Marcus Luttrell

Decorated Navy SEAL & Bestselling Author of "Lone Survivor"

Maria Menounos

CEO & Co-founder of AfterBuzz TV; Former E! News Co-Anchor; Best-selling Author, Journalist & Type-1 Diabetic

Marlee Matlin

Academy Award Winning Actress; Healthcare Advocate & Disability Rights Activist Fighting for Better Access for the Deaf

Mary Lambert

Singer-Songwriter; known for her work on Macklemore's "Same Love"