GFaces is a simple bookmarklet that lets you see what a person looks like using Google face image search.
Just select the name of that person with the mouse cursor and then click the "GFaces" bookmarklet that you brought to the bookmarks toolbar of your browser.
A sort of a window will appear on the top right corner of your viewport with the first 4 results (if any).
Try it with my name: Claudio Cicali :) (at the moment, only the first one is telling the truth)
Just click and drag this GFaces it! link and drop it over your browser bookmarks toolbar