CBM
Though it will be the role he's forever remembered for, there was a lot more to Heath Ledger than just The Joker. Of course, had he not died on January 22nd, 2008, it's likely that his role in The Dark Knight would have seen the Australian actor's career taken to another level, resulting in him becoming one of the world's biggest stars.
Method actors are rarely afraid to go to extreme lengths to embody a character, but they sometimes lose themselves in the process.
Christian Bale took on the role of Batman for three motion picture releases, however it seems the actor wasn't pleased with his performance.
Few performances are as memorable as Heath Ledger’s Joker in The Dark Knight, a role which earned him a Best Supporting Oscar. While he might have drawn inspiration from other dark places too, this one particular 1979 interview (on the Australian talk show The Don Lane Show) must have been high on his list of influences.