Some scientists claim we'll have holodeck-like experiences within a decade. Nick Bilton at the Times:
This is all part of a quest by computer companies, Hollywood and video game makers to move entertainment closer to reality — or at least a computer-generated version of reality. Rather than simply watch movies, the thinking goes, we could become part of the story. We could see people and things moving around our living rooms. The actors could talk to us. Gamers who today slouch on the couch could step inside their games. They could pick up a computer-simulated bat in computer-simulated Yankee Stadium while a computer-simulated crowd roared around them.
Or, porn.