Heath Ledger's last film, The Imaginarium of Doctor Parnassus, is the latest in a string of films made by former Monty Python Terry Gilliam to be thunderstruck by bad luck. In this case, however, Ledger's friend Johnny Depp might be willing to step up and take over the part so that Heath's last film might be finished.
There is apparently a piece of the film in which Ledger's character falls though a magic mirror, and, at that time, it would be logical for another character to take his place. It would be excellent if they were able to finish the film and seal Ledger's legacy, and for Gilliam to finally have the opportunity to finish a film.
The Sun: Johnny to be Heath stand-in