Art Smith

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

Daryl Hannah

Actress, Best Known for "Kill Bill" & "Splash"; Environmental Activist

Darin Olien

Co-Host of Netflix "Down To Earth" with Zac Efron, Best-Selling Author of "SuperLife: The 5 Simple Fixes That Will Make You Healthy, Fit and Eternally Awesome," Original Formulator of "Shakeology," Healthy Living & Superfoods Expert

Superlife: The 5 Simple Fixes That Will Make You Healthy, Fit, And Eternally Awesome

Tom Colicchio

Chef & Owner of Crafted Hospitality

Will Allen

Pioneer in the Urban Farming Movement, Author, Founder of Growing Power

Dale Levitski

Celebrity Chef and Former Top Chef Contestant

Courteney Cox

Actress, Producer & Director

Courteney Cox Is Binge Watching 'Friends

Carla Hall

Celebrity Chef & Former Co-Host of "The Chew"

Carla Hall Talks About Her Arrest

Emmanuelle Chriqui

Actress Known for "Entourage;" Social Advocate for Colon Cancer, Environmental Issues & Human Rights in Congo

David Arquette

Actor, Director, Producer, Screenwriter, Wrestler & Fashion Designer

Christian Slater

Actor known for His Debut Film "The Legend of Billie Jean" and His Appearances in "Robin Hood" and "The Vampire Chronicles"

Mary Nolan

Executive Chef at Bon Appetit Magazine & Former Food Network Personality

Rosario Dawson

Actress Known for "Daredevil" & "Rent;" Activist, Co-Founder & Chairwoman of Voto Latino

Roseanne Barr

Stand-up Comedian; Star of ABC's "Roseanne"

Olivia Wilde

Actress, Screenwriter, Director, Producer & Activist

Alicia Silverstone

Actress & Animal Rights Activist

Jamie Oliver

Celebrity Chef, Bestselling Author & TV Personality

Gwyneth Paltrow

Actress, Entrepreneur & Owner of Goop.com

Gwyneth Paltrow Reveals She's Never Watched Her Emotional Oscar Speeches

Nicole Kidman

Actress, Singer & Film Producer; Known for "The Hours" & "Moulin Rouge!"

Alice Waters

Executive Chef, Founder & Owner of Chez Panisse; Sustainable Agriculture Advocate

Alice Waters Talks Chez Panisse, Starting a Victory Garden, and ...