Medic8r Manor has four or five of these IKEA Expedit shelving units. Each cubicle is about 13" in each dimension, so they'll hold all sorts of books, LPs, office storage boxes, etc. No warping or bending, even with the heaviest, most boring medical books. Highly recommended if you want cheap bookshelves that don't really look that cheap.

Bears, beets, Battlestar Galactica.