New wifi standard coming up, up to 22Mbps over 12,000 square miles.
In the context of the push for gigabit fiber, 22Mbps doesn't seem that fast—and remember, that's a theoretical maximum speed. However, 802.22 will have a huge impact on areas without access: the standard would make it very easy to blanket rural areas in wireless broadband and could also see use in developing countries.
The bandwidth is coming from the "white space" left over from the dumping of analogue TV a couple years ago. This seems like a potential good use. Might partially make up for all those durn broadband satellites we were promised over ten years ago but which never arrived.