OMG! Heath Ledger is blowing our minds all over again!
Apparently the Dark Knight star kept a "Joker Diary" to prepare for his Oscar-winning performance!
If Heath's old dirty jeans sold for $20k, just imagine how much this piece of film history is worth!
In this Too Young To Die documentary footage, Heath's father Kim Ledger offers us a look inside the diary, and inside his late son's head! At one point, he says: