indicated by their production codes). A closeup shot of the bookcase opening to reveal the Batpoles is reused from the pilot episode and the wooden trim that was added around the bookcase is missing in that shot. The mask worn by Heath Ledger's Joker in the opening scene of The Dark Knight is almost identical to the one worn by the Joker during his performance in Pagliacci. The Joker appears hugely excited about unmasking Batman in the theatre scene, and yet shows no subsequent interest in unmasking the duo during the whole series. References External links Batman (TV series) episodes 1966 American television episodes Joker (character) in other media