Matt Roloff

Star of "Little People, Big World"

Spencer West

Inspirational Adventurist; Social Activist; Expert on Overcoming Stereotyping & Bullying

Spencer West

Derek Hough

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

Ed Begley Jr.

Environmental Activist & Emmy Award-Nominated Actor

Lauren Cohan

Actress; Best Known as Maggie Greene on "The Walking Dead"

Chris Gardner

Author of "Pursuit of Happyness," Entrepreneur, Speaker & Philanthropist

Rev. Jamal Harrison Bryant

Founder of The Empowerment Temple

Libby Gill

Leadership, Corporate Culture & Change Expert; Executive Coach; Award-Winning Author of "You Unstuck"

Jessica Yellin

Founder of #NewsNotNoise; Former Chief White House Correspondent for CNN

Joe Scarborough

Co-Host of MSNBC's "Morning Joe" & Former U.S. Congressman

Ian Somerhalder

Actor Known for "The Vampire Diaries"; Animal & Environmental Advocate; Founder of The Ian Somerhalder Foundation

Tim Sanders

Bestselling Author, Technology Pioneer, Expert on Collaboration & Relationships

Joan Lunden

Award-Winning Journalist, Best-Selling Author, Health & Wellness Advocate

Amy Cuddy

Social Psychologist, Bestselling Author & Award-Winning Harvard Lecturer

Samantha Bee

Host of "Full Frontal" on TBS & Former Correspondent at "The Daily Show" With Jon Stewart

Amy Goodman

Host & Executive Producer, Democracy Now!

Gabrielle Union

Actress, Voice Artist, Activist, Author & Investor

Rudy Giuliani

Informal Adviser on Cyber Security for the White House; Former Mayor of New York City; Former U.S. Attorney for the Southern District of New York

John Hockenberry

Journalist and Commentator; Author, "Moving Violations: War Zones, Wheelchairs and Declarations of Independence"

Gloria Allred

Renowned Women's Rights Attorney; Subject of Netflix Documentary "Seeing Allred"