Ledger sceptical about Oscar win

Heath Ledger is convinced he won't win the Best Actor Oscar next month, because the other nominees are too good.

The Australian actor - nominated for his role in Brokeback Mountain - is up against Philip Seymour Hoffman (Capote), Joaquin Phoenix (Walk the Line), Terrence Howard (Hustle & Flow) and David Strathairn (Good Night, and Good Luck).