Oscar's Most Memorable Moments

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The nominations for the 85th Annual Academy Awards have been announced, providing the perfect opportunity to relive some of the greatest moments of Oscar's past, from the unexpected streaker running behind David Niven and Muhammad Ali surprising Rocky star Sylvester Stallone to Halle Berry's emotional Best Actress acceptance speech and Heath Ledger's posthumous Dark Knight honor.

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Hosted by Seth MacFarlane, the 85th Academy Awards will air live from Hollywood Sunday, February 24, 2013 on ABC.