John Carmack working with open-source VR headset
 

During my misspent youth, we used to hang out at an Internet cafe that had a virtual reality headset. The headset was hooked up to a system running Quake, and to be honest, the experience was pretty lousy. The latency was high and the graphics sucked. Lawnmower Man it wasn't. I always figured that VR gear would become mainstream over time, though.

http://techreport.com/discussions.x/23011