Create a new web part page in SharePoint and find it lacking the global site navigation?
Here's how to fix it:
http://blogs.microsoft.co.il/blogs/itaysk/archive/2007/09/18/new-web-part-pages-created-without-side-navigation.aspx
Updated Method Here:
http://jetlounge.net/blogs/teched/archive/2009/01/12/quick-launch-bar-navigation-missing-from-web-part-pages-in-sharepoint.aspx
It's rather disturbing that the Left Side Navigation (Quick Launch) by default, does not display