    Sentence 4: How did Heath Ledger prépare'for his  role as Jokerin Dark Knight?: ~    Sentence 2: Will ‘Heath Ledger be’ rememberéd:  forever. only for. his rendition of the Joker. in The  Dark. ‘Knight? “Is, “Marlon Brando. similarly  remembered oe the ‘majority the most’ for The  Godfather?