This is my favorite wikipedia entry ever ::: Hugh Glass
Cliffs: An american fur trapper stumbles upon a mother grizzly bear and her two cubs, is attacked but manages to kill the grizzly with a knife. His companions leave him for dead. When he regains consciousness he’s badly injured, alone in the middle of enemy Indian territory and without weapons or equipment. His trek back to civilization takes 6 weeks and is filled with danger. After his recovery he sets off on a journey to track down his companions and avenge himself.
Just a little taste of how much of a badass this guy was:
Tags: grizzly bear killing machineDespite his injuries, Glass regained consciousness. He did so only to find himself abandoned, without weapons or equipment, suffering from a broken leg, the cuts on his back exposing bare ribs, and all his wounds festering. Glass lay mutilated and alone, more than 200 mi (320 km) from the nearest settlement at Fort Kiowa on the Missouri.
In one of the more remarkable treks known to history, Glass set his own leg, wrapped himself in the bear hide his companions had placed over him as a shroud, and began crawling. To preventgangrene, Glass laid his wounded back on a rotting log and let the maggots eat the dead flesh.

http://www.badassoftheweek.com/nansen.html