A 6part BBC TV series on the history of mountaineering, starting with the early 1900's and ending with modern day rock climbing and alpinism.
I've seen some of the individual parts on here, but here is the entire 6part series.

Part 1: By Fair Means... : 0:00
A history of modern mountaineering in Great Britain focusing on Albert Mummery, including a recreation of his ascent of the Aiguille du Grépon.

Part 2: In the Long Shadow of the Mountains: 29:37
Follow Chris Bonington as he studies the history of the Himalayas by journeying to Nanga Parbat.

Part 3: Another Golden Age of Alpinism... : 57:42
Bonington examines the era of alpinism following World War II.

Part 4: Portrait of a Snow Lion: 1:24:54
The achievements and life of Reinhold Messner.

Part 5: The Games Climbers Play... : 1:55:02
A history of modern rock climbing, from Joe Brown to Pete Livesey and Jerry Moffatt.

Part 6: Old Game... New Rules: 2:22:57
Extreme Alpinism in the modern era.