The writing of the Artemis Fowl books is rather spare; this is because it's made to be accessible to all ages, but also because capturing such a whimsical world visually isn't the best way to go about it. To be honest, I don't even have a concrete vision of what Artemis looks like, and I like it that way (though I do have an idea of what all the others look like). However, the plot for the books would naturally translate well to the screen. I guess I'm just cautious about it, because the Artemis Fowl books are special, and I don't want them messed up by some latter-day movie.
If it came out I would see it for sure, but my expectations would be pretty low.