Justin Huynh sent in this:

At Maker Faire a couple weeks ago, Matt and I showed off the Open Source Gameboy and OpenBerry, and in the tradition of hacking together arduino versions of cool handheld gadgets, Matt put together the Open Source PSP with two player ping-pong on it. It’s got two inputshields and a touchshield slide, sitting on a triplewide extender which is all hooked up to the arduino. Here’s a link to the blog and youtube.