If I recall correctly, Silent Hill 3 on the PS2 has one option available in the display settings which toggles screen sharpness on-the-fly. (One question comes to mind, is this related in some way to the 'display outline sharpening' option of the DVD player?) I wonder if this graphical effect is software driven and exclusive to Silent Hill 3 game, or rather, a hardware feature which can be turned on or off by setting a specific register. If so, could it not be user-controlled via GSM, for example? I suspect some games would benefit from this.