Google released a new version of their desktop search today.
Beta 3, it offers some new features, my favorite so far is the ability to drag any pannal i want onto my desktop.
You can also send pannals, or your entire sidebar to a friend via googletalk intergrated right in the sidebar, jst drag it to your buddy.
A cool feature which i havent yet tried out allows you to search the contents of one computer, from a different computer, provided both are connected to the internet, and you have a google account.
You can use advanced search features to search your computer, the preferences page is totally redone.
get google desktop here