Quote Exalted Wombat:
What there IS a shortage of is technology that will record something coming down a HDMI cable.
However there is no shortage of folks who have worked out that they can get 'reasonable' results by tapping off the speakers and going through a simple CR filter
I wouldn't be surprised if there are also people who have made decoders for the column/row drives to the actual LCD screens - not something I'd want to try though!
It wasn't me!
(Well, actually, it probably was)