They've been talking about doing that for a long time. There was something about it on Engadget or Gizmodo or one of those today.
If I had an old C64 I might try to stuff an ITX board into it myself.
My girlfriend has an old IBM laptop (Circa 1998). I think it may be thick enough for an ITX mod if I use a low profile cooler.
Back to the OP: Looking at their news section, this idea has been in the works for quite a while. The C64 board looks like a cool novelty. I want to know more about how the board is constructed, though.
As far as the rest of the site goes:
In the Amiga X000 series they make reference to the cases fitting a digital toaster card... haven't heard of those in quite a while.
Also, their future product section looks very interesting. They may be able to find a very promising niche in the thin client market if they could get some of those all-in-one boards in to call centers.