A few years ago I read a wonderful book by Robert Rankin titled The Hollow Chocolate Bunnies of the Apocalypse. It was my first experience with bizarro fiction humor and I loved it. The most succinct definition I've seen for bizarro fiction is from Wikipedia: "Bizarro fiction is a contemporary literary genre, which often uses elements of absurdism, satire, and the grotesque, along with pop-surrealism and genre fiction staples, in order to create subversive works that are as weird and entertaining as possible."
This book follows in that fine tradition. Actually, since bizarro can be deadly serious, explicitly sexual, or grotesquely violent, this book falls into the sub-genre of amiably humorous bizarro, (as did "Hollow Chocolate Bunnies..."). You'll see a lot of comparisons to Terry Pratchett or Douglas Adams, and so on, and that seems fair in terms of word play, deadpan asides, humorous understatement, and antic plotting.
The particular appeal of this book is that it melds a bizarro sensibility with a re imagining of classic fairy tales. There are a lot of books out now that are based on those tales. Many are very earnest; some are playful reinterpretations; some just take on familiar names and characters to go to other places. This is one of the best books to treat the fairy tales with respect, but then tweak and subvert them, often to very sly, subtle and knowing ends.
So, it's funny, it is intricately plotted, it delights in its deadpan wordplay, and it entertains and satisfies. Can't ask for much more than that.
Or alternately, grab yourself a copy of DEATH, THE DEVIL, AND THE GOLDFISH for a wild urban fantasy romp through the streets of London :)