Cuckoo clocks are something of a relic - why would you want your clock chirping at you every hour? It reminds me of those Casio watches that you could set to 'beep' on the hour. Like Casio, however, Cuckoo clocks could make a comeback if one artist has his way. Stefan Strumbel, from Germany, has created a range of quite disturbing Cuckoo clocks that your Grandmother would have never bought! Check them out!