If you loved Guns of the Magnificent Seven, try Buffalo Bill and the Indians, or Sitting Bull's History Lesson
A bridge between a film you've already seen and one most people haven't. Here's what they share, and what the second one does that the first one doesn't.
You already loved

Guns of the Magnificent Seven
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Buffalo Bill and the Indians, or Sitting Bull's History Lesson
What they share
Theysit in Western territory. If that's the register that drew you to Guns of the Magnificent Seven, the second film will land in a comparable space — through a different lens.
What Buffalo Bill and the Indians, or Sitting Bull's History Lesson is
Altman figured he'd make a Western that wasn't really a Western. Buffalo Bill's Wild West show gets a booking with Chief Sitting Bull, who has ulterior motives involving the President. History gets bent out of shape, like a spoon in the hands of a stage magician.