Well the image pretty much speaks for itself, I reckon. I suppose you could fix it up to actually run on steam, but that’s way too over-the-top. There is one slight dig at Valve Software, so I hope they don’t suspend my Steam account (I need my Peggle fix to function).
Here’s a pair of Portal-themed speakers that would flank your gaming PC. The red eyes would pulse to the audio of the music. In all likelihood these would be static speakers to avoid noisy motors, but if possible these guys would “dance” just like in the game (when they sang at the end of Portal 2).