Interesting graph from the Freakonomics guys for Bolt's 200m WR compared to others:
Comparative analysis here: http://freakonomics.blogs.nytimes.com/2008/08/21/usain-bolt-its-just-not-normal/
Great little graph that plots the history of every World Record at the olympics. It really shows that the effect of the Beijing pool: http://www.nytimes.com/interactive/2008/08/16/sports/olympics/20080816_world_records.html#
Comparative analysis here: http://freakonomics.blogs.nytimes.com/2008/08/21/usain-bolt-its-just-not-normal/
Great little graph that plots the history of every World Record at the olympics. It really shows that the effect of the Beijing pool: http://www.nytimes.com/interactive/2008/08/16/sports/olympics/20080816_world_records.html#
