Scott posted a cool trick to map a WebDAV or FontPage website to a drive letter. Since I do a lot of SharePoint work I immediately started thinking of all the cool things I could do with this once I had a folder mapping to my SharePoint portal site (like start using VisualStudio to edit pages, easy backup, etc.). However, I was disappointed that it didn't seem to work with SharePoint. YASPQ!*
* Yet Another SharePoint Quirk