The Onedotzero festival, which was held, on London's South Bank featured an N900 powered installation. The installation was a huge projection (on to side of the BFI), which was controlled by an N900 (accelerometer based motion and text entry). Or as the video says 'using a three inch display, to try and control a 70-foot display'. Two videos (via Nokia Conversations), which give a more detailed explanation and take you behind the scenes are embedded in the full story.