Sure you know about the NES, Super Nintendo, Nintendo 64, etc. But did you know there was also a Nintendo AVS? What was it and when was it shown? According to the Nintendo Wiki:
"The Advanced Video System or AVS, was the prototype of the popular Nintendo Entertainment System. The AVS was shown publicly only once, in 1985 at the Consumer Electronics Show in Las Vegas. The AVS was revolutionary for its day. The system included a keyboard, handheld joystick, light wand/gun, music keyboard, and a data storage unit, that were all infrared wireless. The revolutionary controllers were also wireless, and could be stored in the front of the main unit, or control deck when not in use. The AVS combined many features found in computers of the day and included innovative functions such as game editing and storage, music composition, light wand-TV game interaction (you could shoot at the TV), and never before seen 8-bit video game graphics."
Image Source: http://www.flickr.com/photos/rhoran/45214062/in/photostream/