Emma Bell

Actress Who Played Amy in "The Walking Dead" and Emma in the TNT Drama Series "Dallas"

Olivia Ward

Winner of "Biggest Loser" Season 11

Dr. Francis Collins

Head, Molecular Genetics Section, National Human Genome Research Institute; 16th Director, National Institutes of Health

Dr. Francis Collins: "I don't see a conflict" between science and faith ...

Morton Kondracke

Political Commentator & Columnist

Ian Jukes

Educator & Technology Expert; Co-Founder of Infosavvy

Lou Waters

Aging Expert, Journalist & Former CNN Media Personality; Anchor of "Coming of Age"

Where Are They Now: Lou Waters

Wintley Phipps

Vocal Artist and Founder of the US Dream Academy

Dan Mintz

Comedian and Voice Actor; Known for Playing Tina Belcher on "Bob's Burgers"

Scott McEwen

Attorney & Author of "American Sniper"

Kylie Bisutti

Motivational Christian Speaker & Former Victoria's Secret Model Search Winner

Jaslene Gonzalez

Puerto Rican-American Model, TV Host & Winner of America's Next Top Model; Founder of "On Set with Jaslene"

Alesha Renee

Actress and TV Personality; Appeared on "Guy Code," "E! News," "HotWyred," "The 5ive," BET and the BET Awards Pre-Show

Lee Bienstock

Media Lead, Google; Runner Up on NBC's "The Apprentice"

Al Duncan

Motivational Speaker for At-Risk Youth; Authority on Development & Empowerment

Lamman Rucker

Actor, Education Activist, Green Living Advocate & Entrepreneur

Alexandra Robbins

Journalist & Bestselling Author; Her Books Include "Secrets of the Tomb: Skull and Bones, the Ivy League, and the Hidden Paths of Power"

Joshua Prince-Ramus

Architect & Principal of REX Design Firm

Charles Limb

Associate Professor of Otolaryngology-Head and Neck Surgery

Nikki Cascone

Chef/Owner Red Hook Hospitality, Contestant on Bravo's "Top Chef Chicago"

Charlene Strong

Gay Rights Activist