That reminds me of a mirror setup we have in our house. If you sit at the barstools and have the lights on above you but the lights in the bathroom out, it looks like there's a "floating head"-like image in the bathroom. It's just our medicine cabinet mirrors, but at a glance it'll scare the bejeebers out of you.
Although... I do think my house may be actually haunted. So much weird stuff has happened. We'll wake up to broken drinking glasses lined up on the counter, and once my opaque curtains moved like someone was pushing them from behind (seriously... I saw hand indentions) and I looked behind them to maybe catch my sister in trying to trick me, but... nothing. Those are just a few of the things, but the most recent occurence was whenever my dad was taking a picture of me by my new car. There's me in the foreground, and in the windows behind me you can see faces. I counted at least five distinct faces... I STILL get goosebumps whenever I look at that picture.
It may sound fake, but I know it all happened!