SHV has sixteen times as many pixels as HDTV making a resolution of 7680x4320, The BBC have been broadcasting part of the Olympics to certain places in the UK, America and Japan over the internet at 350 Mbit/s. That is pretty crazy to think about these days, however in the next 10-15 years that could very well be the norm. There's a pretty interesting blog post on over at the BBC Reaserch and Development blog: BBC - Research and Development: The Olympics in Super Hi-Vision
I'd love to see this in action in real-life, can't imagine how sharp the picture will be! Now if PC's and game consoles can render in such resolution scope, that would be even more awesome. Xbox 720 perhaps?