Now that you've seen it and had ample time to let the desire for such a controller for your own self sink in, we bring forth the instructions for you to accomplish such a mammoth feat as creating a wireless NES controller that will work with your Wii. Of course, this isn't for the faint of heart: you're going to have to do some soldering. And not only that, but you're going to have to have an extra NES controller sitting around to try this on. We'd hate to think you wrecked your only NES pad trying to attempt this.
Nintendo NES Controller
Nintendo Wii console