Has anyone else seen this movie?

I suppose it wouldn't have been too popular, with the unfamilier style. It's basically a long documentry. However, I think its an amazing story, especially seeing as the events depicted actually happened. It's more of a tribute to the human spirit and just sheer courage. And it's so beautifully directed. You can't help but wince every time Joe falls for example. (Spoilers if I go any further into that.)

So, has anyone else seen this?