Someone mentioned it already, but We by Zamyatin is an oft overlooked dystopian novel. I read it as a teenager, and while it wasn't as good as 1984 or Brave New World, it's pretty much a cross between them both, and I think it's worth a read. I went through a dystopian book phase myself, but I've never heard of Oryx and Crake. I'll have to add it to my list.