I have long maintained that the single greatest athletic feat I've ever seen was Michael Johnson destroying the world record in the 200m at the 1996 Olympics. Usain "Lightning" Bolt did quite a number on the 100m a few days ago, but he says his best event is the 200. This morning, I stumbled across this chart. Rather than link to it and help kill his bandwitch, I've pasted it in here. This chart shows the twenty fastest 200m marks of all time. Each row represents a hundredth of a second. Eyeballing the chart would suggest that the cutting edge of human achievement in ...