Touching the Void
Touching the Void is an excellent film for those curious about mountaineering. The film re-creates a trip by two young men in 1985 to attempt a never-climbed mountain face in the Andes, cutting between the re-creation and interviews of the men in the present day.
When I was as young as they were, I did some stupid and scary things on the mountains. One of the scariest was falling/sliding nearly twenty feet into a crevasse on a solo mountaineering trip. Compared to this film, that was absolutely nothing. Rent the movie when you're up for it.