Bolt strikes again. Sorry, I couldn't help myself. But setting World Records in track is much more difficult than in swimming. Sure, Phelps set seven records. But there isn't a single record on the books that was set before 2001, and over half of the WR's were set in this Olympics. But, there have been 5 WR's set in track so far in Beijing: Women's Pole Vault, Women's Steeplechase, and Bolt's three records, the 100, 200, and 4x100. Unreal.