Bionic Knees?

So, here's the deal: there is more interest today than ever before in harnessing the natural rythms of the body for kinetic-electric conversion. What you're about to see (should you choose to click "play") is a video that shows a new avenue for electrical generation which could with capacitance and battery storage provide -- assuming, of course, the bulkiness is overcome -- all the whirring joys of extended battery life for all the wearables or gargoyling that may come to pass.