[youtube http://www.youtube.com/watch?v=bKDp0qc0pYQ?rel=0&w=600&h=335]

Conceived as a simple way to record both sides of a conversation in a single shot for a documentary about love filmed in Paris, The Love Box has a name more likely to elicit a stare rather than a split screen. It achieves its effect using a single mirror mounted on a slide and rotated 16º from the camera. [via Wired]