Adam Richman

Host of Man v. Food & Man v. Nation

David Suzuki

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

Kevin Kreider

TV Personality, Actor, Model & Activist

Dr. Monica F. Cox

Professor & Chair of the Department of Engineering Education at Ohio State University; CEO of STEMinent LLC

Joe Hanson

Science Writer, Biologist, Video Producer & Educator

Stephen Sapato

Humorist, Keynote Speaker & Conversation Coach

Kathryn Schulz

Pulitzer Prize Winning Journalist & Author; Staff Writer at The New Yorker

Emily Henderson

Designer, Stylist & Author; Winner of HGTV's "Design Star" Season 5 & Host of "Secrets From A Stylist"

Tiffany Shlain

Founder of The Webby Awards; Emmy-Nominated Filmmaker, Bestselling Author, Internet Pioneer & Futurist

Sister Hazel

Band Known For Singles Like "All For You"

JJ Ramberg

Host of MSNBC's "Your Business" & Co-Founder, GoodSearch.com

Tommy Davidson

Comedian & Actor Known for "In Living Color" and "Black Dynamite"

Tia Torres

Pitbull Advocate & Rescuer Known for Animal Planet's "Pit Bulls & Parolees"

Laurie David

Producer, Activist Author,The Family Dinner: Great Ways To Connect With Your Kids One Meal At A Time

David Cross

Emmy Award-Winning Actor, Comedian, Producer & Writer

David Cross Can't Be Confined To The Late Show's Guest Chair

Kansas

American Rock Band Known for "Carry On Wayward Son"

Tichina Arnold

Actress Best Known for Role on Sitcom, "Martin", "Everybody Hates Chris"

Kristin Bauer van Straten

Best known as Pam on HBO's "True Blood"

Georgia Pellegrini

Chef, Blogger, Author Girl Hunter: Revolutionizing The Way We Eat, One Hunt At a Time

Louie Schwartzberg

Award-Winning Cinematographer, Director, Photographer and Filmmaker