The RetroN 4 (edit: RetroN 5, whatever it is now) reminds me of the Disturbed remake of Genesis' "Land of Confusion." It even has the same kind of cheap cel shaded look to it...

It's not clear to me yet if RetroN 4 has any analog parts, whether it can output analog RGB, or what kind of emulation (it most assuredly isn't using original CPUs or any kind of derivatives of them) it is using - FPGA, CPU-based, or whatever. I'm not sure whether it will be close enough to the real thing to run all the special demos and so on, for example.