Star War: The Third Gathers: Backstroke Of The West.
In 2005, some Chinese guy(s) put out a bootleg of Episode III with Chinese subtitles created from listening to the film, which weren't entirely accurate. The DVD also had English subtitles, which weren't from the original script but were machine translated (badly) from what the bootleggers heard. The results were epic.
Then some absolute heroes decided to dub the whole movie with the bootleg Chinese script. It's a real work of art, almost Shakespearean; the whole thing is worth watching, but you can find highlights on YouTube with just the funniest parts.