Beth Massi has written a couple of very good posts involving ADO.NET Data Services, which I strongly encourage folks to read.
- Using ADO.NET Data Services (the fundamentals, great walk-through)
- Building an Office Business Application for TechReady 8 (awesome teaser)
- OBA Part 2 - Building an Outlook Client against LOB Data (integrating with Outlook is much easier than I thought!)
- OBA Part 3 - Storing and Reading Data in Word Documents (OpenXML, LINQ to XML, schema inference in VS, Astoria updates, VB XML literals... what more could I ask for?)
Can't wait to see what she comes up with next...