Hell, we've all been to theme parks that take you on rides where 3-D-appearing virtual-ghosts fly at you. That technology is at least 20 years old.
I haven't, I'm a boring old person. Nonetheless, you make a good point in finding out the current status of that technology. And yes, I see Jon's point in staying grounded in "the real". That's why the people in the movement who make refrences to "The Matrix" piss me off. When the best you can do is liken our situation to a Hollywood scenario, it doesn't exactly scream credibility.