VIDEO: Paula Abdul on Letterman

So that's why she acts so weird! How come that never occurred to me? "American Idol" judge and former pop star Paula Abdul appeared on The Late Show with David Letterman last night revealing she does have a sense of humor.



Here are some candid images taken as the star arrived for taping of the show in New York. In the official You Tube clip from CBS (whose parent Viacom is still suing the website for $1 billion), Paula also reveals Simon's nickname in Britain.

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