A few sketches aired during the original run of Monty Python were subsequently lost. Half an episode, the tenth of the third series, was censored by the BBC. All that survives is the script. Also, never shot, but written, was the King Brian the Wild scene from Holy Grail. Additionally, a few sketches were either slightly censored post-broadcast or erased for other reasons. A couple of those sketches have have been found on tape [Warning: Autoplaying video]. The two sketches are Political Choreographer (here with a short bit exhorting you to support Channel 11 in Chicago), and an interstitial animation by Terry Gilliam. Also, the uncensored Summarize Proust sketch.
In 1969 banjo virtuoso and bluegrass innovator Earl Scruggs parted ways with his longtime musical partner Lester Flatt and the band they led to great popularity and acclaim, The Foggy Mountain Boys. Scruggs wanted to push his musical gifts as far as they could go. In 1970 he was the subject of a PBS documentary where he played with artists such as Bob Dylan, Doc Watson, The Morris Brothers, The Byrds, Charlie Daniels, Bill Monroe, Joan Baez, various friends and family members, and even records a track accompanying a Moog. You can watch the whole thing online: Earl Scruggs, His Family and Friends.
Still Life with Animated Dogs is a witty and candid cartoon by Paul Fierlinger, animator of Sesame Street's Teeny Little Super Guy, recounting his life from being a dissident artist in 1960s Czechoslovakia to being a successful animator in the US. He tells his lifestory by talking about the dogs he's owned over the years, Roosevelt, Ike, Johnson and Spinnaker. Warning: Something may get stuck in your eye.