Smart Folders automatically search for a term and display its results, great for your music collection.
I always liked the smart folder feature on iTunes and I noticed OS X Tiger added this feature to the entire OS so I decided to try to add this feature to GNOME and this is what I have come up with so far.
Open GEDIT and enter...
then save it as *.desktop (replace * with whatever you want) and place it on your desk top. Their you have it just double click on it and it will automatically search for the term and display it. Your serach term can be part of a file name or a filetype can be entered using *.filetype (i.e. --named=*.mp3)[Desktop Entry]
Exec=gnome-search-tool --named=<**search term**> --start
There may be a better way to do this but I'm not aware of it yet, it would be cool to see something like this fully developed into GNOME.