Technically, Heath Ledger could win another Academy Award. While this is highly unlikely, it's true that the Joker wasn’t Heath Ledger’s final role. He died during the filming of Terry Gilliam’s (Brazil, Monty Python and the Holy Grail) new experimental film, The Imaginarium of Dr. Parnassus. After his death, his role of Tony (a traveling magician) was taken over by Johnny Depp, Colin Farrell and Jude Law. Clearly, this is a group of talented studs who presumably could draw in audiences at the mere mention of their names. The only problem is that a U.S. distributor hasn't been bold enough to claim this project, which already lost millions in production, for they're wary of marketing this gamble (especially after Gilliam's embarrassing flop, Tideland). I guess it is sort of hard to explain how four very different actors (including one deceased) are playing the same role—but, hey, Todd Haynes sorta succeeded by doing it with I'm Not There. So, just use your imagination people!
Source: NY Press