So, the Raspberry Pi is up and running nicely.
Thanks to Shea Silverman I have a working MAME installation on one card, a Wheezy install with a Spectrum emulator (yes!) and a nice openelec install on a third for some Smart TV-type activity.
So now when I can find the time I can indulge in some Vimeo or YouTube action, or some Hobbit and Sherlock, or some Wheelie - the game that made me physically sick, twice - or some Defender.
Oh, happy times!