I saw Vanessa Hudgens' ad of the new Neutrogena Wave and my interest was piqued by this new product. A few days ago, I went ahead and bought one.

The Wave is motorized and powered by one AA battery. You attach a foaming pad on top of the power cleanser, run water through it and then massage your face with it.
It was relaxing, cooling, and really left my skin feeling soft and supple.

The product comes with 14 foaming cleanser pads, a good two-week supply. I went back to Watsons yesterday and confirmed that a refill is available - with 30 pads. The price isn't necessarily what you'd call "cheap." But I guess if you want to take care of your skin, you gotta spend some good money no?