In a touching posthumous tribute, the best supporting actor Academy Award went to the late Heath Ledger Sunday for his transcendent and creepy role as the Joker in The Dark Knight , one of the few awards that went to a sci-fi or fantasy film. Ledger's mother, father and sister accepted the award on Ledger's behalf after traveling to Los Angeles from Australia earlier in the week. The award for Ledger, who died last year of an accidental prescription drug overdose, brought the crowd to its ...