I've been so busy lately that I forgot to announce the project I've been working on for the last 3 months just shipped! :)
Visual Studio 2005 Tools for Office SE shipped last week. Office 2007 developers will now have native support for Office 2007 inside Visual Studio 2005.
It's a free download so try it out: http://msdn.microsoft.com/office/tool/vsto/
Looks like Soma also blogged about it here: