Oh, you've probably heard of at least the TV show at this point. it's everywhere, and its going to be even MORE everywhere as October approaches.
For as good as the TV show is (and it is) the comick book for which it is (loosely) based is, no joke, 37 times better! i know that is hard for some people to comprehend, but its so very true.
its much more violent and "real" i suppose. its hard to describe, especially without letting spoilers slip! ha
i feel that as popular as the book is right now (and OH is it ever!), it's only going to get bigger in the coming year. just a gut call on it.