If you use the Google.com (not a country-specific) page to search, you can now customize a background image if you're logged in. As you hover over the page you'll see a new link in the lower left, which will allow you pick from some standard pix, or upload one of your own:
I think I'm going to use one of D'Arcy's pictures because they're so good, and because it will piss him off ;-) (love ya buddy!)