  Homer Simpson on a silicon wafer. 
This is an image of Homer Simpson etched on a wafer of hyper-pure silicon.  If you're not familiar with the American animated television series The Simpsons, your response to the news of such an object is likely to be "What?".  If you are, it's more likely to be "Why?". 
Source: eBay seller nelsonhom0r9g 
Contributor: Theodore Gray 
Acquired: 1 July, 2007 
Text Updated: 29 January, 2009 
Price: $29 
Size: 4" 
Purity: 99.9999%
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