Multipurpose slideshow system for RaspberryPi
Detail study of the HAL 9000 prop.
Hyperion is an opensource 'AmbiLight' implementation controlled using the RaspBerry Pi running Raspbmc.
The responsive web interface for your 3D printer.
Raspberry Pi "clone"
Use a Raspi to display videos, images or webpages. Plus manage a network of screens.
Raspberrypi VJ tool or some sort
Fully open source software and hardware "equivalent" of the RaspberryPi
Raspberry Pi meets playstation eye to stream video over the net.