Some girls being experimented on by the good people at Toshiba. Static electricity always makes for a good old demonstration. Here's what Wikipedia has to say:
Static electricity refers to the accumulation of excess electric charge in a region with poor electrical conductivity, such that the charge accumulation persists. The effects of static electricity are familiar to most people because we can hear, feel and even see the spark as the excess charge is neutralized when brought close to a large electrical conductor (for example a or negative).