Natalie Coughlin of the USA in just under 59 seconds. You can go to: http://www.nbcolympics.com/swimming/resultsandschedules/index.html for all results from 2008 thus far.
Ryosuke IrieJapan (JPN)
Aya TerakawaJapan (JPN)
Ryosuke IrieJapan (JPN)
Emily SeebohmAustralia (AUS)
Nick ThomanUnited States (USA)
Matt GreversUnited States (USA)
Missy FranklinUnited States (USA)
Ryan LochteUnited States (USA)
Anastasia Zueva Russia (RUS)
Tyler ClaryUnited States (USA)
Elizabeth Beisel United States (USA)