Sex/entertainment/virtual reality:
Gibson's pal Hank has a holographic virtual girlfriend. It is interactive but incorporeal, and cannot actually do anything physical.
This problem is cleverly solved: the hologram comes with a special chair. When Adam Gibson collapses in it, he is startled to find that it is unzipping his fly.
The biggest obstacles to this system are holographic projection, natural voice generation, and credible interactivity. The stimu-chair could already be built, and might be combined with virtual reality goggles".