Here's a heads up for anyone interested in running XBMC or similar on their Pi. OpenELEC, who previously announced support for the raspberry pi have made one more step to bringing that to reality by merging their development work into the public git repository.
The first Rasperry Pi's boards have been shipped to their new owners and in response to high demand for an OpenELEC/XBMC image we have merged our RPi development work into our public github repository. The OpenELEC RPi project code that you can download has already been run by the XBMC team on pre-production Raspberry Pi boards so we know it can be used to build a working system; although we also know there are some issues that need solving and the complete package needs optimising.
Once the OpenELEC developers get their hands on their own production boards we will release a pre-built and supported OpenELEC RPi image alongside our normal ION, Fusion, Ultra and AppleTV (etc.) builds.
There's quite a bit more there, those of you who have been trying to compile XBMC might want to take a look at it.