Without a doubt the NES Guitar gets the ‘random post of the day award’ (we don’t actually issue that award).  Apparently, this is the second iteration of the mod and it actually works.  Flipping up the cartridge slot reveals the 3 knobs generally found on a guitar and the AV out and power ports have been converted accordingly.  Check the video below for a demo and complete walk through of their work.

[via Technabob]