PREVIOUS APPEARANCES ON THE TIME 100: 0
PRO: When it came to sheer spectacle, nothing at last year's Beijing Olympics not the gazillion drummers, not the lip-synching tot could top Phelps' eight-medal run. And as far as advertisers are concerned, Phelps practically walks on water, earning millions of dollars in endorsement deals.
CON: He needs to learn to avoid undergrads with misshapen pipes and digital cameras.
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