The fifth and final book in the Hitchhikers Trilogy, Mostly Harmless, is a fun little romp in a parallel dimension or two. We re-join Arthur Dent in his quest for someplace that's just a little like Earth. Ford and Trillian join the journey, and everyone has fun - that is, until.... well, you'll just have to read it and see. Definately a good read, and the world is just a little sadder now that DNA is no longer with us.