Duncan Trussell is a stand-up comedian, and host of his own podcast “The Duncan Trussell Family Hour”. http://podcasts.joerogan.net http://duncantrussell.com

Justin Wren is an American MMA fighter. Justin is currently fighting in Bellator to help raise more awareness for helping the Pygmy people of the Democratic Republic of the Congo.

Vinny Shoreman is a mind coach and kickboxing & muay thai commentator and coach.

Chris Kresser is a health detective specializing in investigative medicine, blogger, podcaster, teacher and a Paleo diet and lifestyle enthusiast.

John Anthony West is an author, lecturer, guide and a proponent of Sphinx water erosion hypothesis in geology. http://www.jawest.net/

Tony Hinchcliffe is a stand-up comedian, writer, and actor. Tony also hosts his own podcast called "Kill Tony" with Redban, and it's available on iTunes and and YouTube at: https://www.youtube.com/channel/UCwzCMiicL-hBUzyjWiJaseg

Michael Shermer is a science writer, historian of science, founder of The Skeptics Society, and Editor in Chief of its magazine Skeptic, which is largely devoted to investigating pseudoscientific and supernatural claims.

Dan Carlin is an amateur historian and former radio talk show host. He now hosts two popular podcasts available on iTunes, or through his website, to download: Common Sense and Hardcore History.

Bryan Callen is an actor and stand-up comedian, and together with Brendan Schaub he also hosts "The Fighter & The Kid" podcast. http://tfatk.com

James Kingston is a British freerunner, adventurer, and YouTuber, where he can be seen climbing some of the world's tallest buildings and cranes. https://www.youtube.com/jamesmedias

Bryan Callen is an actor and stand-up comedian, and together with Brendan Schaub he also hosts "The Fighter & The Kid" podcast. http://tfatk.com

Brian Redban is a comedian and the founder of the Deathsquad podcast network. Check out his newest podcast called "What Brian Redban Do" at http://deathsquad.tv & on iTunes

Trevor Valle is field paleontologist, scientist, and show host. Link to video with missing audio: https://youtu.be/knWCsonQVG4

Russell Peters is an actor and standup comedian, currently touring internationally all over the world. His latest stand-up comedy special "Almost Famous" is now on Netflix.

Joe is joined by Brendan Schaub, Cameron Hanes, and Eddie Bravo to watch the fights on October 8, 2016.