In 1975, Monty Python and the Holy Grail transformed the titular British sketch troupe from TV comedy icons to genuine movie stars. The film hit the ground running with its instantly quotable opening ...

21st May 1974: From left to right, John Cleese, Neil Innes, Michael Palin and Eric Idle dressed as Arthurian knights on the set of 'Monty Python and the Holy Grail'. (Photo by John ...