I recommend The Golden Age by John C Wright. It is about the closest thing to a genuine post-singularity utopia I've ever read in Sci Fi.
The main character is a (kind of) rationalist hero, but he lives in a world where some humans have chosen radically different "neuromorphologies". Some people live in Hive Minds, some in dreamy, emotional, intuition-based "covens", etc.
I have never read very much Science Fiction, unlike some of the people here on Less Wrong, and I think I would like to. At least, the few books I have read I enjoyed. I've read a couple of books from Asimov's Foundation Series, two Michael Crichton books, Twenty Thousand Leagues Under the Sea by Jules Verne, and an anthology of SciFi short stories (no really famous authors) that my dad owned.
That list looks very short. I just finished reading a fiction book, and am looking to start another. Recommendations? What are the two or three books I simply must read?