Before watching the movie:
For years, Terry Gilliam has wanted to make a Don Quixote movie. And for decades, it’s been in development hell. Except once, it actually went into production. And never came out. This is the story of Terry Gilliam’s impossible dream.
I always thought Gilliam made this documentary himself when production fell apart, but it’s attributed to a couple of other directors. Makes sense, I guess. He’s too busy making weird movies (or at least trying) to make a documentary.
Apparently the title for Gilliam’s movie is The Man Who Killed Don Quixote. I always thought it was going to just be Cervantes’s story with a Gilliam bent, but that title sounds like he intended to at least tell a new frame story. I am unfortunately not familiar enough with Quixote to know how the original story ends, but I expect it’s a classical tragedy. So it might yet not be an original story on Gilliam’s part.