Polystyrene Ceiling Tiles In My New (Old) House

http://tinyurl.com/jdr6xvb DecorativeCeilingTiles secret sale page
Matt and I just bought this house, and almost every single room has these ceiling tiles. I was curious to see what was on the other side of those tiles. (So sorry for the iPhone video faux pas (i.e., vertical video)!! I generally never take videos with my iPhone, and I'm used to my Kodak video camera, which is only slightly bigger than an iPhone and just automatically takes horizontal videos. I'll try to remember to turn my phone in the future!!) :)