Not long ago, Terry Gilliam (of Monty Python fame) set out to make an epic film about Don Quixote. He had six disastrous days of shooting, with everything going wrong that could go wrong, and then production was shut down for good. A film did emerge from the debris, however…an acclaimed documentary about how Gilliam's movie crashed and burned. Here's a link to an article in the L.A. Times about the "unMaking of…" film.