Easy to hoax to be honest. As previously mentioned, the showconfig scripts etc could very, very easily be faked. Rebooting the machine and allowing OS X to boot is an excellent way to provide evidence for the legitimacy of this demonstration, but I think it's very suspicious that the camera pans away just before the machine starts back up. How do we know that the operator didn't switch a KVM from an A1 to a Mac while the camera was looking elsewhere?
If this were real, the only convincing demonstration would show the Mac Mini powered off with the video cable visible, showing it going from the Mac Mini to the monitor, then the Mac Mini powers on and boots OS4 with no camera movement whatsoever.
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moto