We see him without make-up only once, and it's for all of 30 seconds. The fact that Ledger's Joker wears make-up for most of the film reinforces the idea that the Joker is his identity.

Should Heath Ledger win a posthumous Oscar for his performance as the Joker in the new Batman film 'The Dark Knight'? Brendan Cole looks at the issues, and gives his verdict.