Sir Richard Branson

Businessman & Founder of Virgin Group

Adrian Grenier

Actor Known for HBO's "Entourage"; Environmental Activist; UN Ambassador

Derek Hough

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

Joy Behar

Comedian, Actress & Former Co-Host of "The View"

Kandi Burruss

Singer-Songwriter, Entrepreneur & Star of "The Real Housewives of Atlanta"

Kirk Franklin

Grammy Award-Winning Gospel Artist & Businessman

Ken Burns

Historian & Award-Winning Documentary Filmmaker

Ariana Grande

Singer Known for "Thank U Next" & "God is a Woman"

Adam Carolla

Comedian, Entrepreneur and Host of "The Adam Carolla Radio Show"

Trisha Yearwood

Emmy Award-Winning Cooking Show Host & NYT Bestselling Author; Country Music Artist

Bono

Lead Singer of U2, Activist & Co-Founder of DATA (Debt, AIDS, Trade, Africa)

Taylor Swift

Grammy Award Winning Pop Singer-Songwriter; Called "Most Successful Artist of the 21st Century"

Jewel

Singer-Songwriter, Advocate for People Experiencing Homelessness & Author of "Never Broken"

Jim Gaffigan

Grammy-Nominated Comedian & Actor

Gloria Estefan

Grammy Award-Winning Latin Musician

Fantasia Barrino

American Idol Winner Season 3; Author of "Life Is Not a Fairy Tale"

Bette Midler

Entertainer & Award-Winning Actress & Singer

Jessica Biel

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

Sally Field

Academy Award-winning Actress, Director & Producer

Kelly Clarkson

Three-Time Grammy Recipient & Winner of the First Season of "American Idol"; Known for "Stronger" & "Catch My Breath"

Jennifer Lopez

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

Jennifer Hudson

Award-Winning Actress & Singer

Nick Carter

Member of the Pop Group The Backstreet Boys; Contestant on Dancing With The Stars Season 21

Nick Carter Reflects on Loss of Brother Aaron as He Returns to Music Career

Sheryl Crow

Grammy Award-Winning Singer-Songwriter

Robert Downey Jr.

Academy Award-Winning Actor & Producer

Robert Downey Jr. Wins Male Supporting Actor In A Motion Picture

Carrie Underwood

Seven-Time Grammy Award Winning Country Artist, Winner of "American Idol" Season 4 & Author

Toni Braxton

Grammy Award-Winning Singer-Songwriter; TV Personality & Heart Disease Survivor

Smokey Robinson

Grammy-Winning Artist

Wyclef Jean

Grammy Award Winning Musician, Formerly in Band "The Fugees"

Amy Grant

Grammy-Winning Singer-Songwriter; Known as "The Queen of Christian Pop"