If you're getting ready to upgrade to Office 2010 and want to check whether your macros and documents will make the transition without modification, Microsoft has the free Office Migration Planning Manager 2010. It even includes the Office File Converter for bulk conversion of documents. It's really designed for IT professionals, but if you're technically minded or fulfill this role in your organization, you may find it useful.

Download the Office Migration Planning Manager 2010 and get more details from the Microsoft Office 2010 Engineering blog.