Lena Dunham

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

Tim Tebow

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

Donna Karan

Award-Winning Fashion Designer

David Suzuki

Environmentalist & Scientist; Co-Founder of the David Suzuki Foundation

Debbie Sterling

Tech Engineer & Founder and CEO of GoldieBlox; Advocate for Women in STEM

Gayle King

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

Sandra Lee

Cancer Survivor, Activist, Author, Emmy Award-Winning Television Chef & Home Life Expert

Tamron Hall

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

Watch Where They Hide

Juan Williams

New York Times Best-Selling Author, Fox News Political Analyst, Co-Host of "The Five" & Award-Winning Columnist

Bill Clinton

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

Brad Meltzer

Host of History Channel’s "Lost History" & "Brad Meltzer’s Decoded;" New York Times Best-Selling 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

Gail Simmons

Culinary Expert, Food Writer, and TV Personality; Best Known as the Host of Bravo's "Top Chef"

Jeffrey Garten

Professor, Yale School of Management and Expert on Global Business Strategy

Danny Glover

Acclaimed Actor, Producer & Leading Social Activist

John P. Kotter

Leadership & Change Management Guru

Jim McCann

President & CEO of 1-800-FLOWERS.COM

Ralph Nader

Consumer Advocate, Lawyer & Author; Former Independent Presidential Candidate

Graham Hill

Founder of Life Edited & TreeHugger.com