Late Show with David Letterman

Natalie Portman, Artie Lange, Brad Paisley (16x38)

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Alec Baldwin endorses the Fun Facts book; Natalie Portman discusses campaigning for President-elect Obama; Bill Scheft begs the new president to make an ass of himself; Artie Lange plugs his new book; Brad Paisley performed a cover of The Cars' "Good Times Roll."