He won the Oscar for Best Supporting Actor for his role as a Joker in Christopher Nolan's The Dark Knight.
He won the Oscar for Best Supporting Actor for his role as a Joker in [M]Christopher Nolan's The Dark Knight[/M].[SEP][M]He won the Oscar[/M] for Best Supporting Actor [M]for his role as a Joker in[/M] Christopher Nolan's [M]The Dark Knight[/M].[SEP][M]He won the Oscar for Best Supporting Actor[/M] for his role as a Joker in Christopher Nolan's The Dark Knight.