blood: not just for dracula anymore

OK, wow. Apparently, a Japanese research team has developed an implantable fuel cell that runs on blood. Right now, it only generates 0.2 milliwatts of power, but that's enough to run simple electronic sensors and the like.
Brown University is also conducting research on miniature fuel cells designed to work with a pulsing flow - i.e. flow in the circulatory system.

This technology can only improve. How long before I can charge my Palm with a plate of pasta?