This looks like what everyone who's ever owned a video camera and a crt tv has automatically done within the first second or so of owning them, point the camera at the screen! :)
It's a nice effect though, so it's neat that someone actually built something around it.
I started by pointing a camera at CRT TVs many years ago, and for a long time wanted to be able to do that with HD monitors (and, of course, HD TVs don't have the all-important knobs needed to create controlled feedback).
It was finding the HD Panasonic field monitors a couple years ago with the hue / brightness /contrast / saturation knobs for only a couple hundred dollars used (they were initially a few thousand dollars) that made this project possible.
It's a nice effect though, so it's neat that someone actually built something around it.