7- The line “Don’t Shoot the Messenger” in “The Imaginarium of Doctor Parnassus” was improvised by Ledger as he did most of the comedic lines. Johnny Depp who later completed Ledger’s role suggested this same line without knowing that it was already spoken by the late actor.
8- The Hospital explosion scene in “The Dark Knight” has a pause in between which was scripted but the reaction of Ledger was not scripted.