Christopher Lloyd

Actor, Known For Role as Emmett "Doc" Brown in the Back to the Future trilogy, Uncle Fester in The Addams Family, and Judge Doom in Who Framed Roger Rabbit

Robin McGraw

Regular Contributor, The Dr. Phil Show NY Times Best-Selling Author

Charles Blow

Visual Op-Ed Columnist for The New York Times; CNN Contributor & NY Times Best-Selling Author of "Fire Shut Up in My Bones"

Rob Bell

New York Times Best-selling Author & Spiritual Teacher; Host of The RobCast

Ella Henderson

Singer-Songwriter & Finalist on the Ninth Series of "The X Factor"

Dana Bash

CNN’s Chief Congressional Correspondent; Covers the U.S. House & Senate

Dee Rees

Award-Winning Writer & Director Known for "Pariah"

Julia Gillard

Former Prime Minister of Australia, First Woman to Hold the Position & Chair of the Global Institute for Women's Leadership

Not Now, Not Ever: Ten years on from the misogyny speech

Dorie Clark

CEO at Clark Strategic Communications & Author

Robert Caro

Two-time Pulitzer Prize Winner, American Historian and Biographer

Sasha Pieterse

Stars as Alison on ABC Family's TV Series "Pretty Little Liars"

Troian Bellisario

Stars as Spencer Hastings in the ABC Family Series "Pretty Little Liars"

Dove Cameron

Disney Channel Actress & Singer; Best Known for "Liv and Maddie" & "Descendants"

Paul Hollywood

Celebrity Chef & Television Host

Bindi Irwin

Wildlife Conservationist & Daughter of Steve Irwin; Season 21 Contestant on "Dancing With the Stars"

Brooke Baldwin

Journalist & Former TV Host of CNN Newsroom

Christine Romans

CNN Chief Business Correspondent; Host of "Your Money"

Peter Jones

Chairman and Founder of Phones International Group & "Dragons' Den" Entrepreneur

Tasha Cobbs

Atlanta-Based Worship Leader and Musician

Do It Anyway: Don't Give Up Before It Gets Good

Dave Portnoy

Owner and Founder of Barstool Sports