Similar Images in Google Search
Check it out here:
http://similar-images.googlelabs.com/
Google can now help you find similar images based off appearance, instead of words.
Refine your image search with visual similarity
Similar Images allows you to search for images using pictures rather than words. Click the “Similar images” link under an image to find other images that look like it. Try a search of your own or click on an example below.
