The folks behind Ruby on Rails, 37Signals, have compiled ninety essays on almost every aspect of project development and are making it available as a $19 PDF "book" called Getting Real. As a taster they have four essays available for free, which give a good idea of what to expect in the rest of the book, and so far it looks like it'll be well worth reading, just looking at the table of contents is enough to get me salivating.