I suppose if you're into Stomp [1], then very bizarre Japanese electrical instruments (You can skip the first 1′30″ of the video) [2] are for you (link via Flares into Darkness [3]).
[1] http://www.stomponline.com/
[2] http://www.youtube.com/watch?v=9X54RvzZKkI
[3] http://yargb.blogspot.com/2008/02/100-volt-nonsense-instruments.html