GoogleDesktopGizmo

"A search box for Google Desktop (which you must install separately). It collapses down to just the Google Desktop logo when not in use, so as to take up as little space as possible (and sits nicely at the top of the screen on an application's title bar).

This Widget has an option to provide real time search results, much like the standard deskband search that comes included with Google Desktop, along with options to filter the search results to just files, emails, web history, or chat logs.

Windows only, until Google releases a Mac OS X version of Google Desktop."