Easy way to peel potatoes

Saw this while surfing around and can't seem to stop watching. I did love Gilligan's Island but this seems dumb to me. But being who I am, I can't stop thinking about it and now I have to buy some potatoes to see if it works.

Ok, I bought some potatoes and have to say I was disappointed. Mine did not peel like the video. I will admit that they started to peel but then it was stuck all over. I had to skin it off with a knife to finish. It did peel a lot easier.