A Head Mount for your Smart Phone

I'm a little torn on this idea.  Basically it would be a head band that had a little arm where you could mount your smart phone to watch videos on.  The good is you could do menial chores and tasks all over the house and into the yard and keep the same show on the whole time.  The bad is I could see someone wearing one while they drive and then suing the company that makes them when they hit a pole.  I could watch a back yard makeover show while mowing the lawn.