I am a little bit late on this one!
I have posted about the Outlook addin called ClearContext a couple of times before; I think it is a fantastic tool for helping you to organize your inbox. GTDers, it can really help you guys too. So far I think I have helped a dozen or more people unchain themselves from the labour of their inbox by switching over to using ClearContext.
Anyway, ClearContext v3 was released a couple of weeks ago, and adds some great new features, as well as native Office 2007 support (i.e. full integration into the ribbon), and it works great with Vista.
Check it out. It continues to rock. 
