With the newest Batman animated film, "Under the Red Hood", being released this year, I was wondering what Batman comics people wanted adapted. Here are my personal picks:
The Killing Joke: One of the most famous DC graphic novels, and one of the books Heath Ledger read to get into his character. Kevin Conroy doesn't have to reprise his role as Batman (though he definitely should), but they absolutely have to get Mark Hamill for the Joker! When I read the comic, I can definitely hear Hamill saying those lines, especially the Joker's monologue near the end.
Knightfall: Another memorable Batman moment, and the one that solidified Bane as the only villain to truly defeat Batman by breaking his back.
A Serious House on Serious Earth: A more mature-oriented story. I picture it as a sequel to The Dark Knight (yeah, I know Harvey died in the film, but they could always pull the coma card, along with the cover-up card), and done in the same style as Gotham Knight.
The Man Who Laughs: The first meeting between Batman and Joker. 'Nuff said.
What other ones should they adapt?