An email bounced around Wieden+kennedy yesterday, showing everyone the work of Till Nowak, a young German who works mainly in 3D. Even though his 3D work outstanding I decided to show this installation of his. I love how simple to concept is. Also it has to be noted how incredibly flexible it is; there are any number of cool things you could do with this idea.
Anyway, check out his stuff - http://www.framebox.de/