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)
Emily SeebohmAustralia (AUS)
Ryosuke IrieJapan (JPN)
Nick ThomanUnited States (USA)
Matt GreversUnited States (USA)
Missy FranklinUnited States (USA)
Anastasia Zueva Russia (RUS)
Tyler ClaryUnited States (USA)
Ryan LochteUnited States (USA)
Elizabeth Beisel United States (USA)