Nice.
I am sure some of you will recognise this as Elite minus the actual flying bits.
There is a version of elite for the PPC at
http://www.eliteppc.com/index.htm . They are currently trying to sort out some legal issues before releasing it, but you can sign up for to be a Beta tester if you want - the beta is the full version minus a save game feature.
It is a fantastic conversion, and plays brilliantly. It is definitely the most nostalgic game I have played - brings back hours of my wasted youth ;-)