**UPDATE 2** Wanted to share some further ideas from myself and others.
--This same system can be used to create a security camera monitoring screen that, until the TV is on, just looks like a mirror.
--If the idea of a camera in your bathroom doesn't creep you out, install one behind you and have the mirror display the back of your head in a corner.
--Use a RSS feed to put a news ticker on the bottom of the screen
--Music Virtualizer