I recall hearing about someplace that was advertising a "Y2K compliant" screwdriver a while back! [Linked Image]

Although I'm going off on a slight tangent here, the interference problem with sensitive equipment is considered a big problem in some telecoms places.

At the Goonhilly Satellite Station we had a site 11kV primary with back-up generators feeding xfmrs for normal 240/415V 3-phase to each building. But the xfmr banks and distribution gear were split to provide "clean" supplies for comms equipment and "dirty" supplies for everything else.