Oct 5, 1969. This wacky comedy series debuted on BBC-1 in Great Britain and aired until 1974. The cast was made up of Graham Chapman, John Cleese, Eric Idle, Terry Jones, Michael Palin and American Terry Gilliam. John Philip Sousas Liberty Bell March got the show started, and viewers were treated to surreal animation and such skits as The Spanish Inquisition and The Ministry of Silly Walks. On Oct 6, 1974, Monty Pythons Flying Circus began airing in the US. The cast members also made four films together.