BTW I just scored one of these f'ers off eBay:
http://t2.gstatic.com/images?q=tbn:i...roller.jpg&t=1
SNES Super GB controller -- made by Hori who is the absolute greatest maker of controllers. All Japan only stuff, but so high quality. They made the GameCube "snes style" pad too, and they made the amazing arcade stick I have for GameCube. Anyway, this was made back in the day for people playing GB on their SNES using the the Super-GB. It looks so comfy. So I found a boxed one at reasonable price finally, ordered it and then ordered a SNES/GCN adapter from Retro-USB. Looking forward to it.