So in a book year with little excitements, when even the sales of some brand name authors are slipping a bit, first fiction provided some energy and juice. One of the few enduring buzz books of 2002 was Alice Sebold's first novel, the best-selling "Lovely Bones" (Little, Brown), which is still buzzing along. Mr. Pietsch, its publisher, said, "It's been a banner year for first novels, and `Lovely Bones' will fuel that for a few years to come."