Virtual Reality people in simulated games?

Links I found out that best address this topic:

http://www.alltopsoft.com/Games/Adventure-RPG/CAVEMAN.html

http://www.e-motek.com/simulation/simulation/index.html

http://csdl2.computer.org/persagen/DLAbsToc.jsp?resourcePath=/dl/

What's most amazing about this, in general, is that the technology used here, in most if not all cases is bulky and not at all practical to say the least. In terms of ideals, however, it re-defines the multimedia experience, and although, there is not much in the way of grace or elegance of presentation, one thing is for certain: it's a sign of things to come. What things, you ask? A sign of yet another advance in technology that will revolutionize the human-machine experience.