Artie Lange is an actor, writer, comedian, radio personality, and author. He recently started his own podcast available at http://ArtieQuitter.com Learn more about your ad choices. Visit podcastchoices.com/adchoices

John Wayne Parr is an Australian middleweight kickboxer and boxer, fighting out of Boonchu Gym in Gold Coast, Queensland. He is a 10-time World Champion in Muay Thai and runner up in The Contender Asia. Learn more about your ad choices. Visit podcastchoices.com/adchoices

Joe is joined by Eddie Bravo, John Wayne Parr, Brendan Schaub & Bryan Callen to watch the fights on February 22, 2015. Learn more about your ad choices. Visit podcastchoices.com/adchoices

Greg Fitzsimmons is a stand-up comedian. He also hosts his own podcast "FitzDog Radio" available on Spotify. Learn more about your ad choices. Visit podcastchoices.com/adchoices

Christopher Ryan, PhD is a psychologist, speaker, and author of New York Times best seller "Sex At Dawn" - http://chrisryanphd.com/ http://podcasts.joerogan.net Learn more about your ad choices. Visit podcastchoices.com/adchoices

Ms. Pat is a stand-up comedienne, and will have a story featured on an upcoming episode of "This Is Not Happening" on Comedy Central airing Thursday night at 12:30am. Learn more about your ad choices. Visit podcastchoices.com/adchoices

Joe is joined by Eddie Bravo, Brendan Schaub, Tait Fletcher, Ben Saunders, and Justin Milos to watch the fights on February 14, 2015. Learn more about your ad choices. Visit podcastchoices.com/adchoices

Billy Corben is a documentary producer and director, best known for his films "Cocaine Cowboys " & "Cocaine Cowboys 2" and also "Broke" & "The U" for ESPN's 30 for 30 series. His latest film "Dawg Fight" will be available online on March 12, 2015. http://www.dawg-fight.com http://podcasts.joerogan.net Learn more about your ad choices. Visit podcastchoices.com/adchoices

Josh McDermitt is an actor and comedian. He is best known for playing Eugene Porter on AMC's The Walking Dead. Learn more about your ad choices. Visit podcastchoices.com/adchoices

Professor Brian Cox is an English physicist and Professor of Particle Physics in the School of Physics and Astronomy at the University of Manchester in the UK. His BBC science comedy show/podcast "Infinite Monkey Cage" with comedian Robin Ince will be touring the US during the spring of 2015. Learn more about your ad choices. Visit podcastchoices.com/adchoices

Tom Papa is a comedian, actor, writer and television/radio host. Tom has a great story on "This Is Not Happening" here - http://youtu.be/487y7zJzkFM Learn more about your ad choices. Visit podcastchoices.com/adchoices

Ali Rizvi is a writer, musician, physician, currently working on his first book, The Atheist Muslim. http://www.huffingtonpost.com/ali-a-rizvi/ http://podcasts.joerogan.net Learn more about your ad choices. Visit podcastchoices.com/adchoices

Joe Schilling is an American Muay Thai kickboxer who competes in the super middleweight and light heavyweight divisions. Joe's upcoming fight is February 6th at Glory 19 on Spike TV. Learn more about your ad choices. Visit podcastchoices.com/adchoices

Randall Carlson is a master builder and architectural designer, teacher, geometrician, geomythologist, geological explorer and renegade scholar. Learn more about your ad choices. Visit podcastchoices.com/adchoices

Barry Rothbart is a comedian, actor and writer. Check him out soon when his story airs on Comedy Central's "This Is Not Happening" hosted by Ari Shaffir on February 12 at 12:30am. Learn more about your ad choices. Visit podcastchoices.com/adchoices

Eddie Huang is a restaurateur, food personality, sandwich hack, and former lawyer. His book "Fresh Off The Boat" is the inspiration for a new sitcom of the same name starring Randall Park airing on ABC starting in February. Learn more about your ad choices. Visit podcastchoices.com/adchoices

Justin Wren is an American MMA fighter, formerly on the Ultimate Fighter. He recently returned from a 1-year mission helping the Pygmy people of the Democratic Republic of the Congo. Learn more about his project here: FightFortheForgotten.com Learn more about your ad choices. Visit podcastchoices.com/adchoices

Ari Shaffir is a stand-up comedian and hosts his own podcasts “Ari Shaffir’s Skeptic Tank” available on Spotify. He also has a new season of "This Is Not Happening" premiering on Comedy Central, January 22 at 12:30am. Duncan Trussell is a stand-up comedian, and host of his own podcast "The Duncan Trussell Family Hour". http://arishaffir.com http://duncantrussell.com http://podcasts.joerogan.net Learn more about your ad choices. Visit podcastchoices.com/adchoices

Katy Bowman is a biomechanist, heavy on the bio, and author of books on natural movement & human development, solving diseases of captivity. http://www.katysays.com/ Learn more about your ad choices. Visit podcastchoices.com/adchoices

Ari Shaffir is a stand-up comedian and hosts his own podcasts “Ari Shaffir’s Skeptic Tank” available on Spotify. He also has a new special premiering on Comedy Central, January 16th, 2015 at 11:59pm called "Ari Shaffir: Paid Regular" http://arishaffir.com Learn more about your ad choices. Visit podcastchoices.com/adchoices