Snow Crash is so bizarre. It launches you straight into the story with no explanation, starting off with some crazy pizza delivery man in a rocket car with swords and an electric zapper thing for people who don't pay the bill. The whole book is like that--it never explains how, why, or when, leaving you to piece it all together yourself. The entire time I was reading it, I was waiting for a 30000 feet view of the world. But then it ended, never having fully explained itself.
I've never read anything else quite like it, and honestly don't know what I think of it. Are all of Neal Stephenson's books like that?