John Oliver

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

Gabrielle Union

Actress, Voice Artist, Activist, Author

Tracee Ellis Ross

Actress & Youth Volunteer, Star of "Black-ish"

Jay Leno

TV Late Night Show Host, Stand-Up Comedian & Best-Selling Author

Malala Yousafzai

Youngest-Ever Nobel Prize Winner; Advocate for Girls' Education & Women's Equality; Author of the International Bestseller "I Am Malala"

An optimistic look at the future of girls' education | Malala Yousafzai ...

Shonda Rhimes

Executive Producer, Screenwriter, & Author

John Mulaney

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

Leslie Jones

Stand-Up Comedian & Actress; Former Cast Member on "Saturday Night Live"

Leslie Jones to Host 2020 Emmy Awards Nominations

Amy Schumer

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

Amy Schumer reveals she has Lyme disease

Demi Lovato

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

Jessica Alba

Actress; Entrepreneur; Founder & CEO of The Honest Company

Ben McKenzie

Actor; Known for his role on "The OC," "Southland" and "Gotham"

Sofia Vergara

Actress, Entrepreneur, Comedian Known for "Modern Family"

Blake Lively

Actress and Founder of Preserve

Ashton Kutcher

Actor, Producer, Investor & Activist

Journey

Quintessential 1980's Rock Band

will.i.am

Multi-faceted Entertainer and Creative Innovator, Education Advocate

Melissa McCarthy

Actress, Comedian, Writer, Producer & Fashion Designer

Ed Westwick

Star of "Gossip Girl" and "Wicked City"

Bruno Mars

Grammy Award-winning Singer-Songwriter & Record Producer