By now, unless you went into hiding before July 18th, 2008 with zero electricity or somethin, you've seen Heath Ledger's award winning performance as Joker in 'The Dark Knight'. So, you have an idea of his voice and mannerisms. Check out this interview of Tom Waits from 1979, and ask yourself, 'Was Heath Ledger's 'Joker' inspired by Tom Waits?'

The voice is uncanny, and his hunch and mannerisms are pretty spot on.

Skip to about the 1:30 mark to see/hear the interview.

Here's the interrogation scene from 'The Dark Knight' to get a little comparison.

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