Ice-T

Rapper, Record Producer & Actor Known for "Law & Order: SVU"

Robert Ballard

Renowned Ocean Explorer & Scientist

Sean Astin

Actor, Director, Voice Artist & Producer Known For "Lord of the Rings"

Tig Notaro

Grammy Award-Nominated Stand-Up Comic, Writer, Radio Contributor & Breast Cancer Survivor

Amanda Seales

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

Maria Menounos

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

Michelle Rhee

Founder of StudentsFirst & Education Reform Advocate; Former D.C. Public Schools Chancellor

Jenny Slate

Actress, Comedian, Author & Creator of the "Marcel the Shell" Short Films; Known for "Parks & Recreation," "Big Mouth," & "The Secret Life of Pets"

Nikki Reed

Actress, Singer-Songwriter & Model; Founder & CEO of Eco-Sustainable Fashion Brand Bayou With Love; Autism & Environmental Advocate

Marcus Luttrell

Decorated Navy SEAL & Bestselling Author of "Lone Survivor"

Chris Sacca

Google & Twitter Innovation Guru

Lee Daniels

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

Caroline Rhea

Stand-up Comedian, Actress & Television Host

Caroline Rhea Stand-Up: Dating, Astrology and Having a Teenage Daughter

Emmy Rossum

Actress Known for Showtime's "Shameless" & Singer-Songwriter

George Mitchell

Global Diplomat, Peace Negotiator & Leadership Expert; Former Senate Majority Leader Who Enjoyed Bipartisan Respect

Lori Allen

Founder & Owner of Bridals by Lori; Star of "Say Yes to the Dress Atlanta;" Breast Cancer Survivor

Justin Willman

Magician, Actor, Comedian & TV Personality

THE MAGIC PRANK SHOW WITH JUSTIN WILLMAN | Official Trailer ...

Vali Nasr

Professor of International Affairs & Middle East Studies at Johns Hopkins University

Islamic Leviathan: Islam and the Making of State Power (Religion and Global Politics)

Kristen Schaal

Actress, Stand-Up Comedian & Writer

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

Hannibal Buress

Stand-Up Comedian, Actor & Television Writer; Known for Comedy Central's "Broad City" & "The Eric Andre Show"