Some stories are alright and if you're buying the new version with the jim lee cover it has some artwork in the back. I would personally go to a borders or barnes and noble and read it there rather than actually purchase it though
depends on what you normally like.
its impressive how the artists/writers can tell a concise story in only a handful of pages.
if you personally like a wider range of comic styles (not just the standard superhero look), you'll probably really like it.
the gimmick is that a bunch of famous creators get together and are allowed to write/illustrate whatever the hell they want about batman in about 6 to 10 pages.
its a good showcase of what you can you do with the character