I'm into building a modern style arcade cabinet around a 70-80cm LCD screen. Problem is that the bigger ones are all wide-screen. But I thought of an idea to make use of the wide-screen instead of fear it.
I have a controller with a 2 person lay-out. Now I want a machine that can both run 2-player games full screen, and 2 single player games split screen. Is there a way to run 2 instances of Mame at once? Or even better, is it possible to make a Mame front-end that support 2 games at once in split screen layout? That would be totally awesome! Pac Man and many other games are 3:4 tall, which would deliver 2 900x1200 screens on a 1920x1200 display. With all dual-cores and quad cores, finding and distributing necessary power should not be difficult.
In theory I could go for the Eizo 30inch screen, which offers the function on the display side, but it would need 2 computers and thus at least 2000 euro extra (that specific screen is expensive), and the input handling would be an extra horde.
Sketch of what I want to have:

Another thought:
It would be totally awesome if a dual-screen front-end also deals with Skype voice chat and iTunes browsing. That way I could combine a phone, an arcade and a jukebox into 1.