Heath Ledger's final film role was in "The Imaginarium of Doctor Parnassus," released posthumously in 2009. Ledger played the character Tony, and his role was completed by Johnny Depp, Jude Law, and Colin Farrell, who stepped in to portray different versions of Tony after Ledger's death.
The Ultimate Heath Ledger Tribute Trivia: How Well Do You Know the Australian Actor?