Penn won the best actor Oscar in 2009 for his work in "Milk," Winslet the best actress honor for her performance in "The Reader" and Cruz the best supporting actress title for her role in "Vicky Cristina Barcelona."
The late Heath Ledger was posthumously awarded the Oscar for best supporting actor for his turn in "The Dark Knight."
The Academy Awards will be presented March 7 in Hollywood, in ceremonies to be televised by ABC.
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