You can help find Steve Fosset who crashed somewhere Nevada. Steve Fosset was the first man to fly around the world without refueling, and he's been missing six days. Amazon has set up their Mechanical Turk service to allow anyone with some time to look through satellite images from Google. They have divided them up so you can look at as little or as many images as you want and flag them for review if they contain foreign objects.
This image is an example of what you are looking for. Head over to Amazon's Mechanical Turk to get started. It took me about 20 minutes sign up and go through 100 images. Although he has not been found yet, they've located several other crashes they didn't know about.