read this book last month and loved it. Not my first Gaiman or fantasy book as I love both and have read most of Gaiman's books. I thoroughly enjoyed reading this one, in fact it is up there with his "Stardust" in my list of "to read again" favourites.
Favourite character. It has to be Richard; you see him change and grow so much that you feel for him, share his dispairs, trials and joys. Gaimon's characters do that, they become so real that they reach out and touch you. I liked Doors too, of course, and Hunter.
Favourite parts? so many .. Crossing Night's Bridge, Mind the Gap, Hunter's Dream. The idea of a London Above and London Below and doors into other worlds is fascinating (reading Pullman's Dark Materials at the moment) add the prose, the tension and humour, amazing imagination and for me this book has it all.
Not a great fan of Mr Croup and Mr Vandemar but their malacious intent only added to the suspense, and you have to have the villians, someone to hate in a book.