A TV? The one I have seen is a controller that is very similar to a Dreamcast controller in size and layout and that's what has the NES games programmed into it.
They are so obviously bootleg though. I mean the guy who runs it will tell you there's like 1000 games or something, but if you scroll down the list you'll see the same game listed like 10 times, with 9 of them being mispelled in some way to give the illusion that it's a different game. :lol
I'm waiting for one that's legit and backed by Nintendo.