NES Audio
OK, I know you're thinking NES audio doesn't really belong here... but look at this!
That's right folks, Midi input for the NES, connect your keyboard or keytar to the NES and listen to it pump out your greatest tunes!
I personally love the NES audio, and I want one of these.
Man, I'd like to get my hands on that thing! I have an Alesis SR-16 Drum Machine that has MIDI capabilities! That would be sweet to try it out on there! If only money grew in my pocket... or on trees, or gardens...
ooooh, the prices are horrible!
Interesting hardware, though.