I don't read to many comic books and this is the first graphic novel I have ever read, but I recently married this guy who loves both mediums of literature. This fact combined with seeing The Dark Knight got me interested in reading The Long Halloween.
Batman has a lot more going on and a lot more bad guys to watch out for than I would have thought. I like the dynamics of his relationship with Selena Kyle/Catwoman and the artwork is beautifully drawn.
The Long Halloween follows the crimes of Holiday, known for his gag of killing people only on holidays, for the duration of a year. During this year Batman also contends with the Joker, and Harvey Dent is scarred with acid, transforming into the infamous Two-face.
Honestly, I had a hard time getting into a graphic novel. Being so dialog and art driven, I found it difficult to follow. For my underdeveloped palate, I'll just continue to wait for the next film.