Ricky Gervais

Award-Winning English Comedian & Actor; Known for "The Office" and "Extras"

Gladys Knight

Singer-Songwriter & Actress

Ingrid Newkirk

President, PETA

Dr. Hendrik Poinar

Evolutionary Biologist Specializing in Ancient DNA

John Oliver

Emmy-Winning Comedian, Best Known for "The Daily Show with Jon Stewart" & "Last Week Tonight"

Rachelle Lefevre

Rachelle Lefevre is a Canadian actress. She played the vampire Victoria Sutherland in the first two films of the Twilight saga

John Paul DeJoria

CEO of Paul Mitchell Hair Care & Patron Tequila, Entrepreneur, Philanthropist & Environmentalist

Diva Richards

CEO of Hard Work No Excuses; Creator of the Do Work Method

Attenion is the new currency Jada & Will Smith

Alonzo Bodden

Winner of NBC's "Last Comic Standing"; Regular Panelist on NPR's "Wait Wait ... Don't Tell Me"

Kylie Minogue

Grammy Award-Winning Australian Singer Known as the "Princess of Pop"; Breast Cancer Survivor

Bernadette Peters

Three-Time Tony Winner Actress, Singer, & Author

Neon Trees

Alternative Rock Band Known for their Single "Everybody Talks"

Stuart Brown

Founder and President of The National Institute for Play

Sadhvi Siddhali Shree

Jain Monk, Spiritual Director of Siddhayatan Retreat; Iraq-War Veteran, Author & Filmmaker

Joaquin Phoenix

Academy Award-Winning Actor, Producer & Activist Known for "Walk the Line," "Joker" & "Joker: Folie à Deux"

Melissa Rivers

Actress, Television Host & Producer, Equestrienne, and Philanthropist; Daughter of Late Comedian Joan Rivers

Elayne Boosler

Comedian & Advocate for Animal Rescue; Founder of Tails of Joy

Jonathan Safran Foer

Bestselling Author of "Everything Is Illuminated" and "Extremely Loud and Incredibly Close"

Bomani Jones

Emmy Award-Winning Sports Commentator

Hannibal Buress

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