Demi Lovato

Grammy Nominated Singer-Songwriter, Musician, Philanthropist & Mental Health Advocate

Dabo Swinney

Head Football Coach of the Clemson University Tigers

Jeremy Lin

Professional Basketball Player for Beijing Ducks of the Chinese Basketball Association

Sara Bareilles

Singer-Songwriter, Actress, Author & Philanthropist; Known for "Love Song" & "Brave"

Bruno Mars

Grammy Award-Winning Singer-Songwriter & Record Producer

Kellie Pickler

Country Music Artist, American Idol Alum, "Dancing with the Stars" Winner & Host of Daytime Talk Show "Pickler & Ben"

Ross Mathews

Host of Hello Ross! & Author of "Man Up: Tales of My Delusional Self-Confidence"

John Mulaney

Stand-Up Comedian & Former Writer for "Saturday Night Live"

John Cena

WWE Professional Wrestler, Bodybuilder, and Actor Known for "Trainwreck"

Kumail Nanjiani

Stand-Up Comedian & Actor; Known for "The Big Sick"

Colbie Caillat

Two-time Grammy Winning Singer Known for "Bubbly"

Arnold Schwarzenegger

Actor, Producer, Director, Writer; California’s 38th Governor; Host of "Celebrity Apprentice"

Idris Elba

English Actor, Producer, Rapper and DJ; Best Known for His Roles in "The Wire" & "Luther"

Conan O'Brien

Comedian, Writer & Host of "Conan"

Jesse Tyler Ferguson

Actor & LGBTQ Activist; Best-Known for “Modern Family”

Pharrell Williams

Singer-Songwriter, Producer & Entrepreneur; Known for the Hit Single, "Happy"

Forest Whitaker

Award-Winning Actor, Producer & Director; Best Known for "Rogue One: A Star Wars Story" & "The Last King of Scotland"

Chelsea Handler

Comedian, TV Personality & Author

Gabrielle Union

Actress, Voice Artist, Activist, Author & Investor

Amy Schumer

Award-Winning Actress & Comedian; Author of "The Girl with the Lower Back Tattoo;" Feminist Advocate

Amy Schumer diagnosed with rare health disorder: ‘Something was wrong’