The chair is nice and interesting, but it's good only for relaxation, not for working. I don't know how many people could work, or better said type, while laying on their back. Also, I prefer laying on a bed or a couch.
I've had a dream, for years, of buying a La-Z-Boy, the Datahand keyboard, and either mounting a monitor on the ceiling or getting some really good resolution video goggles.
After mounting half the datahand on each arm of the easy chair, and reclining, I figure I'd have reached the ultimate nirvana of ergonomic computing. Unfortunately, I'm still a long way from being rich enough to justify dropping $1K on a friggin' keyboard.