If you attempt to replicate this awesomeness, please be sure to use the 1 gallon freezer bag. It is just a bit heavier. And, yes, the touch controls work perfectly through the bag. Try it out for yourself!
Also, I highly recommend the Simple Human bath caddy that features a reading rack, wine glass and candle holder. This is a great set up to watch some video in the tub. Geeky enough for you?