The Killing Joke is not as good as people make it out to be. In my opinion, Year One, Hush, Long Hollowean, Dark Knight Returns, Death in the Family, Knightfall, and Dark Victory are all better. The Killing Joke is really short and the best parts to me are the art and ambiguity of the ending. Did Batman really kill the joker this time? Fluffying this up to a feature, I don't know how well that will work. The story sticks out to me due to the art and the Moore-ishness of the story. Moore thought much of the story. Probably, because it really doesn't have a lot of meat. It really is just a couple issue arc that was turned into a hardcover special.