Jonathan Gottschall is an American literary scholar specializing in literature and evolution. He teaches at Washington and Jefferson College in Pennsylvania and his latest book, The Professor in the Cage, is available now. http://jonathango...

Joe is joined by Aubrey Marcus, Eddie Bravo & Brendan Schaub to watch the fights on May 16, 2015.

Nick Curson is a strength and conditioning coach known for working with UFC World Champion Rafael Dos Anjos and Russian boxer Ruslan Provodnikov. http://www.speedofsport.com/

Dom Irrera is a stand up comedian, and also hosts his own podcast called "Dom Irrera Live from The Laugh Factory." http://www.domirrera.com/

Sue Aikens is a woman living in Kavik, 197 miles North of the Arctic Circle in extreme isolation. Her motto is "If it hurts, don't think about it." Check out on the new season of "Life Below Zero" on NatGeo November 4th.

W. Kamau Bell is a stand-up comic and former host of the FXX television series "Totally Biased with W. Kamau Bell"

Aubrey Marcus is writer, entrepreneur, and adventurer. Some of his writings and experiences can be found on his website as well as links to his latest venture, Onnit Labs.

Brian Regan is one of the top stand-up comedians working today, find him touring all over the country at http://BrianRegan.com

Dr. Bruce Damer is a polymath scientist, designer, author and general explorer of liminal realms. He has worked for over a decade in simulation and design of space missions for NASA, develops biochemical models for the origin of life at UC...

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

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...

Joe is joined by Eddie Bravo, Brendan Schaub, Tait Fletcher, Ben Saunders, and Justin Milos to watch the fights on Feb. 14, 2015.

Scott Mescudi, aka Kid Cudi, is an American recording artist and actor from Cleveland, Ohio.

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.

Thaddeus Russell is an adjunct professor of American Studies at Occidental College, and also the author of "A Renegade History of The United States"