Peter Diamandis

Founder & Executive Chairman of the XPRIZE Foundation; Author; Named One of The World's 50 Greatest Leaders

Van Jones

CEO of REFORM Alliance, CNN host, Emmy Award-winning Producer & NY Times Best-Selling Author

Erin Brockovich

Consumer Advocate, Author, TV Host & Environmental Activist

Chris Hardwick

Creator of Nerdist Podcast and Website, Stand up Comedian and Current Host of "The Walking Dead" after show, "Talking Dead"

Derek Hough

Dancer, NYT Bestselling Author, Emmy Award Winner for Outstanding Choreography & Six-Time Champion of ABC's "Dancing with the Stars"

Kirk Cameron

Actor Best Known for "Growing Pains," "Left Behind" & "Fireproof;" Advocate for Christianity & Gospel-Centered Marriage

Marcus Buckingham

Peak Performance Expert, Best-Selling Author, Researcher & Strengths Revolutionist

Patricia Heaton

Emmy Award-Winning Actress Known for "Everybody Loves Raymond" & "The Middle"

Marilu Henner

Actress, Producer & NY Times Bestselling Author

Adam Beach

Award-Winning Canadian Actor

Jennie Garth

Television Actress & Advocate for the American Heart Association

Stephanie Izard

Celebrity Chef, Author, Winner of "Top Chef" Season 4 & Partner of Three Award-Winning Chicago Restaurants

Helen Hunt

Academy & Emmy Award-Winning Actress Known for Her Roles in "As Good as It Gets" and "Mad About You"

Fran Drescher

National President of the Screen Actors Guild – American Federation of Television and Radio Artists (SAG-AFTRA) & Actress, Cancer Survivor and Outspoken Healthcare Advocate

Being Wendy

Duff Goldman

Pastry Chef & Food Network Host; Star of "Ace of Cakes"

Cheryl Burke

Professional Ballroom Dancer, Model, TV Host, Known for "Dancing with the Stars"

Carmen Electra

Iconic American Actress and Model

Sarah Jones

Tony Award-Winning Solo Performer, Writer, Comedian & Activist

Vicki Gunvalson

Co-Founder of Coto Insurance; Best Known for Her Role on "The Real Housewives of Orange County"

Margaret Cho

Grammy Award-Nominated Comedian; Actress, Author & LGBT Advocate

Margaret Cho: Remove Your Investment in Pain