Kal Penn

Actor, Writer, Producer & Former Associate Director of the White House Office of Public Engagement

Terry McMillan

New York Times Best-Selling Author Known for "Waiting to Exhale" & "How Stella Got Her Groove Back"

John Ratzenberger

Emmy-Nominated Actor, Entrepreneur & Philanthropist

Bill Nye

"The Science Guy"; Science Communicator, TV Presenter & Mechanical Engineer; Climate Change Activist

Retta

Stand-Up Comedian & Actress Known for "Parks and Recreation"

Jim Abbott

Former One-Handed Major League Baseball Pitcher

Jenna Marbles

YouTube Sensation

Lauren Cohan

Actress; Best Known as Maggie Greene on "The Walking Dead"

Thomas Middleditch

Actor, Voice Actor, Comedian, Screenwriter Known for "Silicon Valley"

Jason Collins

First Openly Gay Player In Major League Sports; Retired NBA Player; Equality Advocate

Max Greenfield

Actor Known For "New Girl" & Children's Author

Mario Lopez

Actor & Entertainment Journalist

B.J. Novak

Actor, Writer & Comedian Known for "The Office"

Carol Leifer

Award-Winning Writer, Author, Actress & Standup Comedian

T.J. Miller

Actor and Stand-Up Comedian, Currently Starring in HBO's 'Silicon Valley'

Nick Offerman

Actor, Writer & Carpenter; Best Known for "Parks and Recreation"

Rob Lowe

Actor, Best-Selling Author, Podcaster & Philanthropist

Lance Gross

Actor, Model & Photographer; Best Known for "House of Payne"

Jerry Mathers

Actor; Best Known for "Leave It to Beaver"

Viola Davis

Academy Award-Winning Actress, Producer & New York Times Best-Selling Author

Viola Davis on Speaking Up, Challenging Stereotypes