Random idea popped into my head. What if they stuck a battery into the iMac? Not like a battery that can let it run for x amount of hours, but one that would last like 30 or 50 min. This would give you time to save precious documents if there was a power outage and you didn't get a chance to save them. Or if you needed to move your iMac, be it somewhere else in the house or to a friends house, you could without turning it off. Any thoughts?