Well this is interesting...

Johnny Depp, Colin Farrell and Jude Law will step in to replace Heath Ledger in “The Imaginarium of Doctor Parnassus,” Access Hollywood has learned.

Following Ledger’s tragic death, the three Hollywood heavyweights have all agreed to play Ledger’s character, “Tony,” at various stages in the film, directed by Terry Gilliam.

A rep for Law also confirmed the casting news to the BBC.

In “Imaginarium,” Christopher Plummer plays the impresario Doctor Parnassus, and Ledger had taken the role of a mysterious outsider who joins the Doctor's troupe on a quest through parallel worlds to save the doctor’s daughter (Lily Cole) from the clutches of the devil (Tom Waits).

Throughout the film, Ledger’s character is transported into three separate dimensions. Although it was not confirmed, it is likely Depp, Farrell and Law would each step into the role in a different dimension.