Are they still going to air batman black knight?
Yes, absolutely. Batman: The Dark Knight will be released this summer, with Heath Ledger as The Joker. His part was complete. There is no chance to do re-takes with him (reshooting scenes that were already shot), but they can still make the movie very easily without any additional filming. Likely, there will be something at the end of the credits, such as “For Heath” or “This movie is dedicated to the memory of Heath Ledger.” It might even be a bit longer than that, but there will be some little memorial at the end of the credits. Richard Harris died before Harry Potter And The Chamber Of Secrets got into theatres. He was still seen as Professor Dumbledore. Clark Gable died less than two weeks after finishing The Misfits; it was released with him in the film. Those are just two examples of the great tradition of releasing a movie even after one of the stars has died.