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Video: Jennifer Lopez Dances With New Kids on the Block, Plus American Idol Winner Predictions

Video: Jennifer Lopez's Secret NKOTB Past, Plus Her American Idol Winner Predictions!

Jennifer Lopez was once a backup dancer for New Kids on the Block, and Jay Leno had the footage to prove it on last night's episode of The Tonight Show. Take a look at the hilarious 1991 video of her getting down with the guys on stage, and then watch what Jennifer has to say about the four remaining American Idol contestants! Who does she think will win it all?

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