I changed both my home and my work desktop images. Both of them are photos I took on my last trip to the USA. (click for full size)
Chihuli blown glass ceiling in the lobby of the Bellagio in Las Vegas:
This one might look like Mudokon native art, but it might actually have been inspiration for OWI's designers, rather than the other way round. It's a Polynesian painting on bark cloth from Indonesian Papua. I saw it in the De Young Museum in San Francisco (which I would recommend to anyone with an interest in tribal art).