An enterprising young modder has managed to cram an entire NES into a classic NES controller. Yes, now you can simply plug a controller directly into your TV without having to worry about a system in between.
It's not exactly your childhood's NES. The controller is pre-loaded with 70 games, and you can pop a cartridge onto the back if the one you want isn't included. Sure, it might be awkward playing with a cartridge hanging off your controller, but who the hell are you to complain?