I liked lot the architecture of oxite cms at http://www.codeplex.com/oxite. I learned lot from that project. I use nhibernate for data access instead of linq2sql and it works good for me. Of course its not a large scale project but its a perfect start. CSLA does not follow the DDD paradigm.
The above book “.NET Domain-Driven Design with C#” by Tim McCarthy (Wrox Press)” is really good one.
The best book for understanding DDD is Domain-Driven Design: Tackling Complexity in the Heart of Software by Eric Evans. This book is the “bible” of good DDD design.
Beyond that many resources can be found on http://dddcommunity.org/. There you can find more videos and articles from DDD experts including Eric Evans and there is a sample application of good DDD design but unfortunately its in java 🙁