HD-DVD on your PC!
The XBox 360 HD-DVDROM was released in the states not to long ago, and will be making an appearance in the UK very soon.
The HD-DVD Rom add-on for the 360 is connected through USB, meaning it possible to connect to a PC, all that is needed is the right Drivers and HD Player software, and there you have it, HD on your PC for around £130.
