Enterprise Core Objects III
For those of you who haven't seen it before, I've written a series of articles for the electronic Bitwise Magazine on Enterprise Core Objects II (with as main example this ASP.NET weblog application that you're currently looking at).
Since the release of Delphi 2006, I've been working with Enterprise Core Objects III, the successor of ECO II, and I've been migrating (or more rebuilding) my weblog application using some of the new ECO III features.