My MAMERoom.com cocktail cabinet is almost complete.
4 players (2 vertical, 2 horizontal). Mini-itx PC is about $250 (3 ghz, 2GB RAM, 500 GB HD).
I'm in the middle of configuring MAME/Hyperspin for bootup. Other than that the only thing left is to find seating, as this sits quite low! MAMERoom suggested those kneeling chairs. I was thinking maybe ottomans, but then you aren't leaning over to look at the screen...anyone have suggestions?