For which film did Jared Leto win the Oscar for Best Supporting Actor?

Who won the Oscar for Best Supporting Actor for 'Beginners'? For which film did Christopher Plummer win the Oscar for Best Supporting Actor? Who won the Oscar for Best Supporting Actor for 'Django Unchained'? Who won the Oscar for Best Supporting Actor for 'Dallas Buyers Club'? Who won the Oscar for Best Supporting Actor for 'Whiplash'? For which film did J.K. Simmons win the Oscar for Best Supporting Actor? Who won the Oscar for Best Supporting Actor for 'Bridge of Spies'? For which film did Mark Rylance win the Oscar for Best Supporting Actor?