Twilight by Stephenie Meyer
There has been so much written about these books that I am not going to add much to the debate. Suffice with that I found the book completely "unputdownable " and can see why it is a bestseller of note. The whole concept of an almost completely parallel world running along side and interweaving with ours was fascinating. At the time when I read the book I was not sure if I actually was going to read the rest of the series, but subsequently have and enjoyed all.
I did find Bella extremely irritating though. Her neadyness and passive character type really frustrated me and I was sure that in real life Bella and me would never have been friends. Way too dark and broody. Although a good book on it's own, it is really just the introduction to the rest of the series.
Cat's rating: 9/10 for a good read.