Peter Diamandis

Founder & Executive Chairman of the XPRIZE Foundation; Author; Named One of The World's 50 Greatest Leaders

Van Jones

CEO of REFORM Alliance, CNN host, Emmy Award-winning Producer & NY Times Best-Selling Author

America Ferrera

Award-Winning Actress, Producer & Humanitarian

LeVar Burton

Literacy Advocate & Actor Known for "Roots," "Star Trek" & "Reading Rainbow"

Derek Hough

Dancer, NYT Bestselling Author, Emmy Award Winner for Outstanding Choreography & Six-Time Champion of ABC's "Dancing with the Stars"

Caitlyn Jenner

TV Personality & Olympic Gold Medalist; Co-Host of "Keeping Up With Sports"

Patricia Heaton

Emmy Award-Winning Actress Known for "Everybody Loves Raymond" & "The Middle"

Goldie Hawn

Academy Award-Winning Actress & Founder of the Hawn Foundation

Kathy Ireland

CEO & Chief Lifestyle Designer of Kathy Ireland Worldwide; Supermodel & Health Advocate

Kathy Ireland - Anatomie interview

Mariska Hargitay

Emmy Award-winning Actress & Philanthropist; Known for "Law and Order: Special Victims Unit"

Maria Shriver

Journalist, Best-Selling Author, Entrepreneur & Former First Lady of California

Jamie Lee Curtis

Academy Award-Winning Actress, Activist, Author; Best Known For Her Roles in "Halloween," "Freaky Friday" & "Everything Everywhere All At Once"

Jamie Lee Curtis - MSNBC interview

Jane Fonda

Actress, Feminist, Author, Political Activist, Former Fashion Model & Fitness Advocate

Margaret Cho

Grammy Award-Nominated Comedian; Actress, Author & LGBT Advocate

Margaret Cho: Remove Your Investment in Pain

Les Brown

Motivator, TV Personality & Best-Selling Author

Cheryl Hines

Actress Known for HBO's "Curb Your Enthusiasm;" Heart Disease & Cerebral Palsy Spokeswoman

LeBron James

Sports Icon, NBA Superstar, Philanthropist

Jessica Biel

Actress, Producer, Co-Founder of Make the Difference Network & Global Water Quality Activist

Jennifer Lopez

Actress, Recording Artist, Dancer & Philanthropist; Known by the Nickname "J. Lo"

Leonardo DiCaprio

Award-Winning Actor & Environmentalist