Chuck Palahniuk is, of course, best known for Fight Club, a remarkable novel which gave rise to an equally remarkable movie. As a writer, his specialty has been in having no speciality -- other than that of refusing to conform to any expectations readers might have of him. Except in one regard: a book by Palahniuk will be edgy, dark and iconoclastic. Which is very much the case with Rant, The Oral History of Buster Casey. This is a novel that leaves the reader notably off-kilter for a number of reasons; its coal-black vision of a society in a state of near savagery and its sardonically funny approach to the scabrous narrative. The