Why hasnt this one been done before?

Have a look at this one - amazing I've not seen something similar before!

Many thanks to Tony for providing that link....and I guess I should link his site here too - though you really shouldnt view it at work, and maybe not even at home if you are easily unsettled! And for all you worried people out there - it's so not my bag, rest assured that vanilla Jon-ster remains very much so!