At the time of his death last month, Heath Ledger was still filming a fantasy movie called The Imaginarium of Doctor Parnassus for Terry Gilliam.
In light of the young actor's death, Gilliam et al have come up with a way to complete the film. In it, Ledger's character is transported to three different dimensions when he steps through a mirror. Now, his character will be taken over by Johnny Depp, Jude Law and Colin Farrell in these other dimensions. No word on when Imaginarium will resume production.
Source: Variety.