TV is going big with its special Monty Python and the Holy Grail party. Its marathon showing of the seminal film that will include new insights from John Cleese, Terry Gilliam and Michael Palin.

Cleese will talk and take questions following a screening of the Monty Python comedy troupe’s 1975 film debut.

John Cleese took a big risk when he helped create “ Monty Python and the Holy Grail ” back in 1975, as the idea of a series ...