Al Gore

45th Vice President of the United States, Nobel Peace Laureate & Bestselling Author

Bill Maher

Political Satirist & Host of HBO's "Real Time"

Blake Lively

Actress and Founder of Preserve

Wiz Khalifa

Rapper, Songwriter and Actor; Best Known for Singles "Black and Yellow" and "See You Again"

Willie Nelson

Country Music Singer-Songwriter Known for "On The Road Again" & "Always On My Mind"

Miley Cyrus

Grammy Award-Winning Singer-Songwriter & Actress; Youth Homelessness Advocate and LGBTQ Activist

Seth Meyers

Host of "Late Night with Seth Meyers" & Former Head Writer for SNL

Jennifer Garner

Award-Winning Actress, Entrepreneur & Advocate

Patrick Dempsey

Actor; Best Known as Dr. Derek Shepherd on ABC's "Grey's Anatomy"

Bradley Cooper

Actor Known for "Silver Linings Playbook," "Serena" & "American Sniper"

Steve Carell

Actor, Comedian, Producer, Writer & Director

Alec Baldwin

Acclaimed Broadway, Film & TV actor

Melanie Martinez

Singer-Songwriter, Director & Artist

Brendan Fraser

Academy Award-Winning Actor

Cate Blanchett

Academy Award-Winning Actress Known for "Elizabeth" & "The Aviator;" Ambassador for the Australian Conservation Foundation

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

Sean Paul

Rapper, Singer & Songwriter

Hailey Bieber

Model, Media Personality & Entrepreneur

Shania Twain

Grammy-Winning Canadian Singer; Best-Selling Female Country Pop Artist

Busy Philipps

Actress, NY Times Best-Selling Author & Late Night Host of "Busy Tonight"