Terry Gilliam's The Man Who Killed Don Quixote
Terry Gilliam was the visionary animator/director at work behind the scenes of the legendary British comedy team Monty Python, and he went on to direct four sci-fi/fantasy epics that qualify as some of the genre's greatest films: Brazil, The Adventures of Baron Munchausen, The Fischer King and 12 Monkeys. After Monkeys finished completion, he set his sites on what would be his most sprawling epic to date, The Man Who Killed Don Quixote, based on the literary classic Don Quixote. The film went on to experience possibly the most legendary set of setbacks that any film has experienced, including the death of its star, footage getting destroyed, and million dollar sets ravaged by fires. The film was sadly never completed, even though it filmed on and off for nearly ten years. The only fortunate thing to come out of this doomed project was a fantastic documentary Lost in La Mancha that details its rocky history.