Lena Dunham

Writer, Director, Actor & Producer Best Known for HBO’s “Girls”

Erin Andrews

Fox Sports Correspondent & Former Co-Host of "Dancing with the Stars"

Tim Tebow

ESPN College Football Analyst; Heisman Trophy Winner; Former Quarterback for NFL's Denver Broncos & Baseball Outfielder for the New York Mets

Alice Walker

Pulitzer Prize & National Book Award-Winning Author; Best Known for "The Color Purple"

Alfre Woodard

Emmy Award-Winning Actress; Human Rights Activist

Ty Burrell

Actor and Activist; Plays Phil Dunphy on ABC's hit show "Modern Family"

Donna Karan

Award-Winning Fashion Designer

Mandy Patinkin

Actor Best Known for "Homeland," "Criminal Minds" and "The Princess Bride"

Gayle King

Co-Host of "CBS This Morning" & Editor-At-Large of O, The Oprah Magazine

Tamron Hall

Award-Winning Journalist; Former National News Anchor for NBC News; Host of the "Tamron Hall Show"

Watch Where They Hide

John Smoltz

Former Atlanta Braves Pitcher & National Baseball Hall of Famer; MLB Network and Fox Analyst

Gary Kelly

Vice Chairman & CEO of Southwest Airlines

Bill Clinton

42nd President of the United States; Founder of the William J. Clinton Foundation

Nick Kroll

Actor & Comedian; Best Known for "Big Mouth," "Kroll Show" & "The League"

Wanda Sykes

Emmy Award-Winning Comedian, Actress & Author

Sallie Krawcheck

Founder & CEO of Ellevest; Author of "Own It: The Power of Women at Work"

Tim O'Reilly

Founder & CEO of O'Reilly Media

Jim Parsons

Emmy-nominated and Golden Globe-winning actor; best known for role as Sheldon Cooper on the CBS sitcom "The Big Bang Theory"

Kunal Nayyar

Actor Known for "The Big Bang Theory"

John P. Kotter

Leadership & Change Management Guru