Before Heath Ledger, how many actors were offered the role of Joker in The Dark Knight?
From Jack Nicholson setting out to scare kids to Cesar Romero's gleeful trickster, Joker is a role that can make or break your career.
Actually, if at you just go down the list, updated with an Oscar-winning performance from Joaquin Phoenix, playing Joker is generally pretty good for your career...