Neverwhere - Neil Gaiman
Neil Gaiman is a master of storytelling and I enjoyed the book highly. Some bits however reminded me of stories I already read, like Hitchhiker's guide to the Galaxy and some Greek Myths. Especially the bit with the Labyrinth and the Beast in it, was lacking in imagination in my opinion. That said: Gaiman knows how to keep the reader's attention from the first sentence 'till the end.