A while back I showed you (as have so many other developers in the blogosphere) how to add IntelliSense to SharePoint when you are editing CAML for use in SharePoint projects. Unfortunately there are a handful of places where the WSS.XSD is not fully complete... but more importantly, it doesn't provide a lot of context.
CAML aficionado and good friend John Holliday has recently offered up a more complete, with context documentation, better schema files to give us even more robust IntelliSense when working with SharePoint CAML! Nice work John (and a HUGE thanks!).