a few projects that have visually translated the 16 "illegal" digits comprising the AACS key, which is a series of pseudo-random hexadecimal numbers that allows users to back up HD-DVD discs on Linux. it was the subject of a recent online revolt, as a group of companies that use the copy protection system demanded the code be removed from several Web sites.
one visualization simply translated the numerical code by their hexidecimal encoding, while warning no-one to use these colors together. another visual representation can be bought online as a decoration on a t-shirt.
see also digg's revolt visualized.