Josh Radnor

Actor, Filmmaker, Author & Musician Best Known for his Role in "How I Met Your Mother"

Choosing Between Growth or Depth As A Man - Josh Radnor

David Kirkpatrick

Best-Selling Author of The Facebook Effect, Technology & Internet Expert

Bob Harper

Personal Trainer & Former Host of "The Biggest Loser;" Heart Attack Survivor

Maintaining A Healthy Body & Mind | Bob Harper Q&A

Giancarlo Esposito

African-Italian American Actor, Director, Producer; Best Known for his Role as Gustavo "Gus" Fring on AMC's Breaking Bad

Amanda Seales

Poet, Spoken Word Artist & Media Personality Known for HBO's "Insecure;" Anti-Smoking Activist

Tristan Walker

Founder & CEO at Walker & Company Brands, Inc. & Former VP of Foursquare

Alicia Silverstone

Actress & Animal Rights Activist

Dan Harris

Award-Winning ABC News Anchor & #1 New York Times Best-Selling Author

Leigh Anne Tuohy

Inspirational Subject of "The Blind Side"

Dan Abrams

Chief Legal Affairs Anchor at ABC News & Founder of Abrams Media

Debbie Sterling

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

Brian Kilmeade

Television & Radio Presenter; Co-host of "Fox & Friends" on FOX News Channel

Chaz Bono

Transgender, LGBTQ Rights Advocate, Author, Speaker

Danny Glover

Acclaimed Actor, Producer & Leading Social Activist

John Kasich

Former Governor of Ohio

Henry Cho

Stand-Up Comedian & Actor

Tavi Gevinson

Creator of Fashion Blog Style Rookie and Rookie Magazine; Actress and Singer in the Broadway Show "This Is Our Youth"

Candice Kumai

Chef & Best-Selling Author; Former TV Host & Model

Kara DioGuardi

Music Industry Songwriter & Producer

Jason Jones

Actor & Writer; Former Correspondent on "The Daily Show with Jon Stewart"; Star of the upcoming TBS series "Vacationland"