The Vital Spark - All Episodes

Saturday Night Live is an Emmy Award-winning late-night comedy showcase.

Since its inception in 1975, "SNL" has launched the careers of many of the brightest comedy performers of their generation. As The New York Times noted on the occasion of the show's Emmy-winning 25th Anniversary special in 1999, "in defiance of both time and show business convention, 'SNL' is still the most pervasive influence on the art of comedy in contemporary culture." At the close of the century, "Saturday Night Live" placed seventh on Entertainment Weekly's list of the Top 100 Entertainers of the past fifty years.

Flying is one of the safest forms of transport. But what happens when tragedy strikes? From human error and accidents to mechanical faults and design flaws, the success of aviation history is punctuated with disaster and catastrophe. It's rare, but it does happen. Follow experts as they determine what went wrong and work out how to prevent these horrific tragedies from happening again. Examine the wrecks and official records, and hear from eyewitnesses, passengers and aviation experts as we reconstruct some of the most tragic disasters in aviation history. Air Crash Investigation looks at what went wrong and how future disasters can be averted.

Accused: Guilty or Innocent? offers an intimate account of what happens when someone is formally charged with a crime and sent to trial – all solely from the perspective of the accused, their legal team and family members.

COPS follows police officers, constables, and sheriff's deputies during patrols and various police activities by embedding camera crews with their units. The show's formula adheres to a classic cinéma vérité ethos. With no narration or scripted dialog, it depends entirely on the commentary of the officers and on the actions of the people with whom they come into contact.

Since the premiere of his groundbreaking series African American Lives through the first season of Finding Your Roots, noted Harvard scholar Henry Louis Gates, Jr. has been helping people discover long-lost relatives hidden for generations within the branches of their family trees. Professor Gates utilizes a team of genealogists to reconstruct the paper trail left behind by our ancestors and the world's leading geneticists to decode our DNA and help us travel thousands of years into the past to discover the origins of our earliest forebears.