Way back in '72, this Gesundheit Radio was created by an "experimental research group" at Texas Instruments. Or at least, that's what student James Chambers will tell you, who created the back-story for added "colour" to his sneezing radio.
Yes, sneezing. As the questionable story goes, the radio is forced to sneeze every six months in order to protect the microprocessors from dust. Users can manually override the bi-annual sneeze, with a SNZ button being added for those days when you really don't have time to give the feather duster a work-out.
The radio is on display at the Work In Progress exhibition at the Royal Collage of Art in London, though if you can't get down there to check it out in person, hit up the video below to see the radio "sneezing", with the dust being expelled (visually) through the front. [James Chambers via We Make Money Not Art via Slashgear]