Yayhooray member Vitaflo (of Assembler.org fame) has created the ultimate emulation station.

It uses an old Mac G4, and a Playstation controller with a USB adapter for the hardware. Then he built his own custom front-end launching utility using Firefox in kiosk mode, and simple dHTML. That along with a series of OS hacks has created a beautiful setup that lets you play over 5,000 games from 15 different systems using 1 computer, and 1 controller.

You switch games and control the entire system from the PSX controller. When in the launching GUI, use the shoulder buttons to switch between the systems, then the D-Pad to pick a game and Start to launch. When you’re done playing, Select + Start takes you back to the launching utility.

For right now the system is not made available to the public, though it may be inspiration for you to work on your own setup. The creator has said he may make it available to the public at some point, though it won’t be a simple installer, as there are quite a few OS hacks required as well.