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:

http://blogs.msdn.com/somasegar/archive/2006/11/03/tools-to-help-developers-build-solutions-for-office-2007.aspx