I've been doing objects for a long time, been interested in patterns for a while, and have recently become deeply involved in a couple of XP projects.
--Eric
He's written a book on the subject, and we've been reading it for the past couple of months in the SiliconValleyPatternsGroup.
You can now read the draft at http://domaindrivendesign.org/book/index.html. The book is AbsolutelyFabulous?! I wish I had written it. --KentBeck
The book is now released, see: http://www.domaindrivendesign.org/book/ or DomainDrivenDesign