Did intelligent beings from outer space visit Earth thousands of years ago? From the age of the dinosaurs to ancient Egypt, from early cave drawings to continued mass sightings in the US, each episode gives historic depth to the questions, speculations, provocative controversies, first-hand accounts and grounded theories surrounding this age old debate.

The Walking Dead: Origins is a series of specials exploring the journeys of the series' most celebrated characters. Each episode charts the story of the zombie apocalypse from the point of view of a single character and features new interviews and narrations from the actors that portray these iconic characters, interwoven with clips from the most pivotal moments of their journeys so far.

For over 40 years Val Kilmer, one of Hollywood's most mercurial and/or misunderstood actors has been documenting his own life and craft through film and video. He has amassed thousands of hours of footage, from 16mm home movies made with his brothers, to time spent in iconic roles for blockbuster movies like Top Gun, The Doors, Tombstone, and Batman Forever. This raw, wildly original and unflinching documentary reveals a life lived to extremes and a heart-filled, sometimes hilarious look at what it means to be an artist and a complex man.

An intimate, behind-the-scenes look at how an anonymous chef became a world-renowned cultural icon. This unflinching look at Anthony Bourdain reverberates with his presence, in his own voice and in the way he indelibly impacted the world around him.

An intimate, behind-the-scenes look at how an anonymous chef became a world-renowned cultural icon. This unflinching look at Anthony Bourdain reverberates with his presence, in his own voice and in the way he indelibly impacted the world around him.

Two childhood friends go from high school dropouts to the most powerful drug kingpins in Miami in this true story of a crime sage that spanned decades.

A powerful expose' on gay conversion programs, revealing the damage inflicted by shame and repression through intimate testimonies from current members and former leaders of the pray the gay away movement.

A powerful expose' on gay conversion programs, revealing the damage inflicted by shame and repression through intimate testimonies from current members and former leaders of the pray the gay away movement.

From a piece of meteorite found in Tutankhamun's tomb to the Crown of Thorns, explore some of the most perplexing and unusual objects lying hidden away in museums, laboratories and storage rooms

Though claims of extraterrestrial encounters have long been dismissed, many believe the existence of UFOs is not just likely, but a certainty.

The Walking Dead: Origins is a series of specials exploring the journeys of the series' most celebrated characters. Each episode charts the story of the zombie apocalypse from the point of view of a single character and features new interviews and narrations from the actors that portray these iconic characters, interwoven with clips from the most pivotal moments of their journeys so far.

From the hilarious to the mind-boggling, from the deadly to the bank-busting, witness some of the most outrageous structural disasters and the genius resolutions to get things back on track.