"A Man Called Horse" is a very unusual film about the west for many reasons. It's NOT set during the usual 'glory days' when most films of the type were set (1866-1880). It had no cowboys. And, it had very little dialog in English.
The film begins with a rich Englishman, John Morgan (Richard Harris), on a hunting expedition in the American West in the 1830s. He and his party are attacked by Sioux warriors and Morgan is taken prisoner by the natives. At first, he's treated like a slave and his life truly sucks. It didn't help that the only one who spoke any English in the tribe was another slave who was French...and the guy was a little nuts! Through the course of the film, however, Morgan learns to respect and even enjoy life with the Sioux and becomes an important member of the tribe. There is naturally much more to it than that but it's best you just see it for yourself.
This movie is almost like an ethnographic portrait of the Sioux and the times instead of a typical western film. The usual sorts of clichés and expectations are mostly missing. Some will hate this--some will no doubt be relieved. All I know is that I enjoyed it and liked the more intimate and native-centered approach of the film. Well made all around...though the sun ceremony is NOT for the squeamish.