We are finally sorting out the spare room, and are planning to keep most of our books up there. However, we haven't got any bookcases. We have about five hundred books, though! I'm not too bothered about style, but would like them to be pleasant to look at and not just racking shelving, and prefereably wooden. IKEA seem to only have the one sort (Billy) that isn't really setting me on fire, but will do in a pinch. Keeping it cheap but nice would be great, as much as I'd love to spend thousands of pounds on a custom-made library we don't have the funds required...
Any ideas?