I didn't see it mentioned, I'll be sure to add in my own suggestion...
Brave New World, by Aldous Huxley.
Excellent book. Not as well known as Orwell's 1984, but still shows a similar sort of reality.
Edit: Ah, right, also, if you're into Fantasy novels and Arthurian legend, then Once and Future King, by T.H. White, is also a very good read.







