PIAPARA LiveCD is a Linux LiveCD system with SDLMAME emulator and AdvanceMENU as frontend. It supports arcade and PC monitors, USB joysticks, PIAPARA interface, pendrive & hard disk storage and network.
DDMM is a program for people who use 2 or more displays. It prevents the mouse from crossing from one display to another too easily, and allows teleporting mouse pointer between displays with a hotkey. See http://ddmm.sourceforge.net/ for details.