@ pallin:
Ouch! I wasn't trying to be miserable, honest! Was just disagreeing that it was a clearer example - what makes it different is that there's a real object, the bowl, in the box.
As for the MIT spinning disk demo (or maybe it was another external company - I can't remember), that was actually quite cool for what it was. Apparently the thing vibrates considerably (or at least the unit that a colleague saw). So I disagreed that this tech was better than that one (artifacts notwithstanding).
I do take your point about the positioning of the image - it does always seem to be central. Maybe they down-project the video onto the partially reflective glass sides (notice they're at 45 degrees).