When movie director Brett Leonard made “Lawnmower Man” in 1992, the premise of the science-fiction film was quite a stretch on the believability scale. A simple-minded gardener develops telekinetic powers and controls the world’s most powerful computer systems after participating in virtual reality games.Made for an absurdly low budget of $5 million, the film went on to make $250 million and was the top independent movie of the year. And Leonard continues to remain interested in VR, decades after his film gave the technology a popular cultural platform