10 – Heath Ledger kept a Joker Diary. In it he wrote as the Joker and included a list of things he believed the Joker would find funny including blind babies, geniuses with brain damage, and sombreros.
11- Heath Ledger would skateboard on the set while he was wearing the costume and full makeup of The Joker. He was not in the character while he did this but was being his regular self
Image Credits: thejournal.ie
