Lady Gaga Shows Her Flashiest 'Poker Face' On 'American Idol'

The flamboyant pop star dazzles with her alien-disco performance art.By Gil Kaufman Lady Gaga performs on "American Idol" on Wednesday Photo: F Micelotta/American Idol 2009/Getty Images for Fo "American Idol" has never seen anything like Lady Gaga. The show has had plenty of musical guests over the years, and yes, there was that frantic, flame-haired, foot stomping visit from past winner Fantasia that made Simon's jaw drop last year, but that was nothing compared to the alien-disco vi...

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