2015: The Year Virtual Reality Will Get Real
1982 saw the release of Disneys Tron, which was, for many, their first exposure to the idea of a computer-generated alternative reality. In 1992, Neal Stephenson published Snow Crash, a novel full of seminal ideas about VR. During this whole span, Virtual Reality has remained a fascinating idea, but always seemed just out of reach.
This is a nice little article covering the beginnings of virtual reality as a concept, through to the hardware of the present day. A great entry point for people new to all things VR.