Well, the project I've been working on for quite a while just went live to the world: The Archivist at http://archivist.visitmix.com. Go give it a whirl and let me know what you think. The intro article is here: http://visitmix.com/LabNotes/Intro-To-The-Archivist and you can download the source code here: http://code.msdn.microsoft.com/archivist.
Been quite an adventure building and shipping this puppy -- looking forward to seeing what happens now that it is out in the wild.