Who won the Oscar for Best Supporting Actor for 'Iris'?

For which film did Mikey Madison win the Oscar for Best Actress? Who won the Oscar for Best Supporting Actor for 'The Cider House Rules'? Who won the Oscar for Best Supporting Actor for 'Traffic'? For which film did Benicio del Toro win the Oscar for Best Supporting Actor? For which film did Jim Broadbent win the Oscar for Best Supporting Actor? Who won the Oscar for Best Supporting Actor for 'Adaptation'? For which film did Chris Cooper win the Oscar for Best Supporting Actor? Who won the Oscar for Best Supporting Actor for 'Mystic River'?