I've long advocated that the future of video delivery should either be multicast, or old-school protocols like HTTP combined with caching at the ISP. (Why all ISPs don't run transparent Squids, I still don't understand.) Bittorrent just isn't the right way to do it.
Except it's not available in my area, and still requires propriety DVRs/STBs, which I assume means that it probably uses DRM and therefore has massive interoperability problems.
But it's a start. I hadn't heard of anyone actually doing it, before now.