I did a URL quick list for SharePoint 2003 some time ago and found it rather handy. With SharePoint 2007 I didn't think it would be very useful since the Site Actions menu has been improved so much. But I find that while in MOSS site collections it is a pain to navigate to and from sites to get to the various settings for content types and galleries and what not, so I put this list together for faster navigating. Note that the previous 2003 tricks for displaying the Web Part Tool Pane and the Web Part Maintenance Page still work in 2007.
SharePoint 2007 URL Quick List