R.O.B. The Robot

R.O.B. (Robotic Operating Buddy), released in Japan as the Family Computer Robot, is an accessory for the Nintendo Entertainment System. It was released in July 1985 in Japan and later that year in North America. It had a short product lifespan, with support for only two games which comprised the "Robot Series"; Gyromite and Stack-Up. R.O.B. receives commands via optical flashes in the screen. Once it lights up, it is ready to receive six commands. Just like NES Zapper, R.O.B. only functions correctly when coupled with a CRT type television. All the Robot series games include a test feature that sends an optical flash that should make R.O.B.'s LED light up.
Here is a commercial for R.O.B.
Here is the IRATE Gamer's review of R.O.B.
Part I: Gyromite:
Part II: Stack Up:
Whats YOUR review, thoughts on R.O.B.?