NES controller holds entire system

This interesting hack sees the original NES controller having its innards reconfigured to hold an entire NES system within – along with a couple of RCA outputs for video and sound into a TV. In addition, you get classic titles such as Tetris and Contra among numerous others. The Nintendo logo you see on the front of the controller boasts a backlight that glows in a cool red color. Talk about one interesting and crazy mod! When will we see SNES and Genesis controllers carrying the console within as well? I guess the line stops at CD-based systems though.