I saw a demo of BSI at the 2011 Consumer Electronics Show. BSI enabled decent, low noise photos to be taken in very poor light – such as outdoors at night.
All of the examples I have seen have been in still picture cameras, some of which also take video. I have not yet seen this technology in a “pure video” camera example, but I imagine that will change soon.
Still camera makers seem to be a in race to ever increasing gigapixel cameras, providing a resolution that exceeds that of the lens. I would not mind less resolution with better low light capability. Will that ever happen?