You can also consider picking up a Tripp Lite Isobar Ultra Surge Supressor. Unlike the cheap $10-$15 supressors that you can pick-up anywhere, the Isobars actually work. They run about $40 to $60 each (at buy.com) depending on the # of outlets, and protect against all spikes, as well as providing insurance (50K I think) for any damaged equipment. Obviously, they don't provide back-up power, but they are a less expensive, yet worthwhile alternative to a UPS.