I've been meaning to try one of Scott Westerfeld's books for some time, and chose Uglies over his vampiric book, Peeps. This story is set in a futuristic society were people undergo surgery in their teenage years to conform to an idealistic standard of beauty, and to be known as Pretties. There are those who fight against such a regime, living outside the cities. They have discovered that there is more to the surgery than cosmetics.
Tally becomes reluctantly involved in the rebel movement, and struggles with the beliefs she has been taught about beauty and life. Uglies is an great YA novel, and is pleasantly subtle while still making its point about society's obsession with appearance. It has a dramatic ending, and I'll definitely be reading the sequel, Pretties.