The Cool Tool have released the Sandy Box CNC controller just in time for the holidays. If you are unfamiliar with The Cool Tool, they make small CNC machines for research, prototyping, hobby, and education. While the Sandy Box is primarily intended to control their UNIMAT line of CNC machines, it's possible to use with most any CNC system currently driven by a PC parallel port.
Inside the box is a BeagleBone with a custom cape already setup to run Machinekit. It should make a great controller for folks looking to upgrade or replace a dated DOS or Windows machine. If you're interested in using the Sandy Box on your machine, or have any questions, head over to the Machinekit Google group where Alexander and others can answer your questions.