The Fogscreen is a very cool new display technology, I doubt that it will ever enter homes, but it’s really well suited for convention displays. Below is a quote from the website:
The FogScreen is a new invention which makes objects seem to appear and move in thin air! It is a screen you can walk through! The FogScreen is created by using a suspended fog generating device, there is no frame around the screen. The installation is easy: just replace the conventional screen with FogScreen. You don´t need to change anything else – it works with standard video projectors.