Stacy London

Stylist, Author, Magazine Editor, Known for her role as Co-Host of TLC's "What Not to Wear"

Jeffrey Tambor

Emmy Award-Winning Actor of "Arrested Development," "The Hangover" & "Transparent"

John Stossel

Emmy-Award Winning Journalist

Emmy Rossum

Actress Known for Showtime's "Shameless" & Singer-Songwriter

George Mitchell

Global Diplomat, Peace Negotiator & Leadership Expert; Former Senate Majority Leader Who Enjoyed Bipartisan Respect

Susan Cain

Bestselling Author; Lecturer; Expert on Culture & The Power of Introverts

Gabrielle Bernstein

Founder of HerFuture.com & New-York Times Best-Selling Author

Kristen Schaal

Actress, Stand-Up Comedian & Writer

Kristen Schaal's Daughter Is Not A Kristen Schaal Fan | CONAN

Hannibal Buress

Stand-Up Comedian, Actor & Television Writer; Known for Comedy Central's "Broad City" & "The Eric Andre Show"

Diane Sawyer

Anchor, ABC World News

Christian Siriano

Fashion Designer, Founder of Christian Siriano, Winner of "Project Runway" Season 4

Jonah Berger

Marketing Professor at the Wharton School at the University of Pennsylvania & Internationally Best-Selling Author

Leymah Gbowee

Liberian Peace Activist, Social Worker & Women's Rights Advocate; 2011 Nobel Peace Laureate

Adam Richman

Host of Man v. Food & Man v. Nation

Mark Messier

Former Professional Ice Hockey Player & Six-Time Stanley Cup Winner

Andy Samberg

Actor, Comedian, Rapper & Writer; Known for "Saturday Night Live" & "Brooklyn Nine-Nine"

Halla Tomasdottir

CEO, The B Team, Presidential Candidate (2016) & TED Speaker, Iceland

Katie Lee

Chef, Co-Host of Food Network's "The Kitchen" & Author of "The Comfort Table: Recipes For Everyday Occasions"

Jenna Bush-Hager

Best-selling Author; Contributing Correspondent, NBC's Today; Chair, UNICEF's Next Generation and Editor-at-Large, Southern Living Magazine

Superpower Sisterhood with Jenna Bush Hager and Barbara Pierce ...

Gloria Gaynor

Grammy Award-Winning Disco Singer Known for "I Will Survive"; Speaker on Domestic Violence