IC designers sometimes cannot contain their creative artistic bents and express their abilities in places where almost nobody will ever discover it - on the surface of a microchip. I found these examples strewn across the Internet, and not a one seems to have originated from its owner, so the copyrights, if any, are indeterminate. I will be glad to give credit if you provide authentication. Come to think of it, a lot of the chip art creators and their companies might not be too anxious to claim credit because potential copyright violation of their own.
Note: Since originally posting this I discovered a massive collection of chip art that has not just images, but also descriptions of the art and on which microchips they were discovered - Molecular Expression, on the Florida State University website.
December 12, 2008