Here's another thought regarding all the older consoles. It doesn't have the fancy automation of my earlier concept, but it could be practical depending on how the system is used. If you take everything except the current generation (PS3, 360, and Wii) and maybe the PS2, the consoles are basically all designed around 480i video and stereo audio. The PS2 could get lumped in with the current generation since it had optical output. Connect the current generation (and maybe the PS2) directly to individual inputs on a surround processor, and then configure the front panel input to use composite video and stereo analog audio. Then each time you pull out a legacy console, you plug it into the front panel input. That's three connections to make. Unless the room is set up with all ten consoles on display and ready to operate in place (drive or cartridge slot accessible, controllers at hand, etc.), this may actually be necessary anyway.