I used to run a couple of rack mount servers in my garage, but they were too noisy and power hungry. Now I just leave my cocktail table MAME system on 24/7, running Windows XP and online via WiFi.
Bonus, it's always ready to play a game. It's also hosting that picture!
Damn, do I have to put in 25 cents to get on the interewebs at Tone's house?
Looks like you're serving up some Donkey Kong!