Belkin 600va UPS $67.99 delivered.
These Belkin UPS's work ok. The software is a bit naf though. APC are better but at this price every one should have at least this.
A UPS has all the function of a surge board AND a battery that gives you 10-30 mins (depending on its capacity and how much stuff is plugged into it) grace in a power cut until it tells your computer to shut down.