Now in AutoCAD 2009 you have the ability to pin items most used such as standard or detail DWG files. This can make the Recent Documents menu much more helpful. I cant tell you how many times I have spent looking for the same base file or document when by pinning the file I would have saved time having to search because it was off the most recent files menu. You can also set the Recent Documents to show a preview of the file as well.
Cheers,
Shaan