I just got this book yesterday. I've seen the movie and enjoyed it, but heard the book was better. I've also read (and seen) another of Bret Easton Ellis's other novel, American Psycho. It was pretty awesome as well. Anyway, your thoughts on Rules?
I really enjoyed Rules because it was so... well, fucked up! I like the movie too -- just as much as I like the book, which is unusual for me.