Sitting Bull & Geronimo.
I just read Geronimo's autobiography (edited by S. M. Barrett) and it really blew my mind. I've only read a bit about Sitting Bull, but his story is equally amazing/depressing.
Apparently, this past Christmas, Brian Formo smoked out of Sitting Bull's pipe... because they're related! Maybe it's the same pipe pictured above? If I get his permission I'll post his story about his Christmas Peace Pipe experience... it's pretty great!
It also turns out that Walter Hill directed a movie about Geronimo, got that in my queue. Well, shit I gotta get back to my homework... so much time, so little to do... wait, strike that, reverse it.