The Singularity Institute for Artificial Intelligence is preparing for the day that machine intelligence exceeds human intelligence (maybe that already happened with Deep Blue beating Kasparov?). The Valley hosts their annual conference this weekend.
The improvements in machine compute power, cooler processors, solid state memory without moving parts, portable audio and video, machine translation and voice recognition have brought the electronic part of the equation to a very compelling point.
The news that you can circumvent natural circuits in the body, re-routing brain signals to bring back movements to paralyzed limbs, brings electronics and computing into the world of the cell.
Take that one step further with genetic engineering and personal DNA analysis, and optional sources of stem cells, and the unknowns of biology are beginning to get conquered.
Put them all together, and ...the viable Cyborg is here.
Android is already here :-)