Melissa Gilbert

Actress, Author, Activist

Steven Rinella

Author; Journalist; TV Host, "MeatEater", Former Host of "The Wild Within" on Travel Channel

Peter Sagal

Host of NPR's "Wait Wait ... Don't Tell Me!"

Grace Helbig

Comedian, YouTube Personality, Actress & Author

Buzz Aldrin

Former Fighter Pilot & 2nd Man to Walk on the Moon; Author

Keren Elazari

Cyber Security Analyst, Author & Senior Researcher at the Tel Aviv University Interdisciplinary Cyber Research Center

Ann Handley

Chief Content Officer of MarketingProfs & Wall Street Journal Bestselling Author

Lee Child

New York Times Bestselling Author, Best Known for the "Jack Reacher" Series

George Mitchell

Global Diplomat, Peace Negotiator & Leadership Expert; Former Senate Majority Leader Who Enjoyed Bipartisan Respect

Lori Allen

Founder & Owner of Bridals by Lori; Star of "Say Yes to the Dress Atlanta;" Breast Cancer Survivor

John Mattone

Top Ten Leadership Authority, Top Twenty Executive Coach in the World & Best-Selling Author

Sarah Michelle Gellar

Television & Film Actress, Co-Founder of Foodstirs

Wilmer Valderrama

Actor, Producer, Activist & Television Personality

Rob Schneider

Emmy-nominated Actor, Comedian & Screenwriter; Former SNL Cast Member

Wadah Khanfar

President & Co-founder of Al Sharq Forum & Chairman of Common Action Forum, Former Director-General of the Al Jazeera Network

Wadah Khanfar | This House Would Pressurise Israel to Exchange

Heidi Murkoff

Co-author of the "What to Expect" series

Laura Benanti

Tony Award-Winning Actress & Singer

Steven Kotler

NY Times Best-Selling Author, Innovation Leader & Peak Performance Expert; Director of Research for the Flow Genome Project

Patricia Arquette

Academy Award-Winning Actress, Activist, Humanitarian & Author

Arlo Guthrie

Legendary Folk Singer, Actor and Humanitarian