Sebastian Maniscalco is a stand up comedian and he also hosts his own podcast with Pete Correale called “The Pete and Sebastian Show” available on iTunes. His new special "Stay Hungry" is now streaming on Netflix.

Nick Di Paolo is a writer and stand up comedian. Check out "The Nick Di Paolo Show" at http://nickdip.com and on YouTube - https://www.youtube.com/channel/UCghHWRYUpbsUdcsG7PrTgzQ

Killer Mike is a rapper, actor, and activist. He is one half of the group Run The Jewels and has a new show on Netflix called "Trigger Warning" available now.

Mike Baker is a former CIA covert operations officer. Currently he is the president of Diligence LLC, a global intelligence and security firm.

Ben O’Brien is a writer, editor, host of The Hunting Collective podcast, a member of the Backcountry Hunters and Anglers Board of Directors and MeatEater’s Editorial Director.

David Goggins is a retired Navy SEAL and former USAF Tactical Air Control Party member who served in Iraq and Afghanistan. He is an ultramarathon runner, ultra-distance cyclist, triathlete and world record holder for the most pull-ups done...

David Sinclair, Ph.D., A.O. is a Professor in the Department of Genetics and co-Director of the Paul F. Glenn Center for the Biology of Aging at Harvard Medical School. He is best known for his work on understanding why we age and how to sl...

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.

Sir Roger Penrose OM FRS is an English mathematical physicist, mathematician and philosopher of science. He is Emeritus Rouse Ball Professor of Mathematics in the University of Oxford and Emeritus Fellow of Wadham College, Oxford.

Tom Papa is a comedian, actor, writer and television/radio host. His podcast "Come To Papa" is available through All Things Comedy on iTunes.

Brian Redban is a comedian and the founder of the Deathsquad podcast network. Also look for him only "Kill Tony" available on iTunes & YouTube: https://www.youtube.com/channel/UCwzCMiicL-hBUzyjWiJaseg

Derren Brown is an English mentalist and illusionist. He has a new special called "Sacrifice" streaming now on Netflix.

Theo Von is a stand-up comedian, television personality, host, and actor. Check out his podcast called “This Past Weekend”& "The King & The Sting" with Brendan Schaub both available on iTunes & YouTube.

Joe is joined by former unified WBC, WBO, Ring magazine and lineal middleweight champion, Kelly Pavlik.

William von Hippel is a professor of psychology at the University of Queensland. His new book "The Social Leap" is available now via Amazon.