Katherine Berman & Sophie LaMontagne

Co-founders of Georgetown Cupcake; Stars of the hit series "DC Cupcakes" on TLC; Best-selling Authors

Katie Stevens

Actress & Singer Known for "The Bold Type"

Kevin Bales

Professor of Contemporary Slavery, & Research Director of the Rights Lab at the University of Nottingham; Co-Founder of Free the Slaves

LTG David Deptula

Dean of the Mitchell Institute of Aerospace Power Studies

LaDonna Gatlin

Singer & Author; Sister of the Legendary Country Music Group, The Gatlin Brothers

Lamman Rucker

Actor, Education Activist, Green Living Advocate & Entrepreneur

Laura Ling

Acclaimed Journalist Known for Being Detained in North Korea; Host of "E! Investigates;" Co-Author of "Somewhere Inside"

Lauren Cohan

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

Lauren Potter

Actress Best Known for "Glee;" Special Needs Advocate

Laurie Holden

Actress Known For AMC's "The Walking Dead;" Human Rights Activist

Lisa Gansky

Corporate Advisor, Marketing Expert & Author of "The Mesh: Why the Future of Business Is Sharing"

Lou Waters

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

Where Are They Now: Lou Waters

Maksim Chmerkovskiy

2x “Dancing with the Stars” Champion & Humanitarian

Malcolm London

Young Poet, Educator, Activist & TED Speaker Known For "High School Training Ground"

Marc Abrahams

Creator of the Ig Nobel Prizes

Matt Roloff

Star of "Little People, Big World"

Maynard Webb

Silicon Valley Company Builder, Founder of Webb Investment Network & Former Chairman and CEO of LiveOps

Michael C. Anthony

Bestselling Author, Body Language Expert & Kidney Disease Survivor

Michael Eric Dyson

MSNBC Political Analyst, Former Host of NPR's "The Michael Eric Dyson Show" & Best-Selling Author

Michael Stevens

YouTube Sensation; Best Known as Vsauce