Find the Face Behind the Result
This is a neat trick you can use on a Google Image search to filter the search results so that they include only images of people. How is this useful? Well, it could come in handy if you are looking for images of the prominent people behind popular products, companies, or geographic locations. You can perform this search by appending the code &imgtype=face to the end of the URL address after you perform a standard Google Image search.
Examples (notice the differences in each URL):
Image Search for Google vs. Faces Behind Google Image Search
Image Search for Digg vs. Faces Behind Digg Image Search
Image Search for California vs. Faces Behind California Image Search