Touching the Void (2003)
Have any of you NOT seen this incredible movie? Queue it up on Netflix if you haven't.
Its based off the true story of two expert mountain ice-climbers who take on one of the tallest peaks in the Peruvian Andes. They become the first known people to make it all the way to the top, but like with most climbs, the descent is the trickier part. On the way down one of them breaks his leg, which leads them to have to make some very hard decisions if at least one of them wants to come out alive, as they only brought minimal fuel to melt snow into water. (And mountain climbing is a VERY thirsty business.)
I won't spoil the ending, but let me just say that for those who say there are no atheists in fox-holes, it appears that there are some on mountain-tops. Despite facing certain death, the idea of calling out to God never even entered this lapsed Catholic's picture.
A very inspirational and moving story.