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9 Famous Men Who Have Been More Than Friends With Jennifer Aniston
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Benedict Cumberbatch and Sophie Hunter Are Expecting Their Second Child!
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17 of Hollywood's Most Horrifying Murders

Justin Bieber Teaches David Letterman How to Tweet

Justin Bieber twitters on the air that he is on The Late Show with David Letterman. Dave seems confused about the whole twittering thing, but Justin tells him to just roll with it.

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