John Oliver, Martin Sheen create the perfect doomsday video

In the early days of CNN, Ted Turner made a tape that could only be played at the end of the world, taking it upon himself to decide that when humanity is on the brink of extinction, the best thing to do is watch a marching band play the hymn "Nearer, My God to Thee." John Oliver is not impressed, and decided to enlist Martin Sheen to narrate a celebratory doomsday video that can send us out with a bang. In the clip below, Sheen shares some of humanity's greatest achievements (and some bloopers)...