On this page you can see Apple QuickTime Panoramic and Object VR. A more intense application of Virtual Reality are the screen shots of museum applications that utilize real time game-like environments on a desktop computer.
The Panoramic VRs are created by stitching together photographs or computer-generated images essentially into a roundabout or circle. Object VRs can be a spinning item as if it were on a lazy susan or something like a car with doors that open and close when you click on them.
Other kinds of Virtual Reality can include completely computer generated environments. The more powerful the processor, the more realistic the experience.