I'd have to disagree, normal surge/spike strips wont do *** and didnt for me, it ruined multiple things on one of my rigs a few years back, and I didnt even think it was an electricity problem til I had basically replaced everything in the rig atleast once and was still getting pissed off by things dieing. By the time a surge hits the strip and the strip recognises it and shuts down, invariably its too late and whatever is connected to the strip is already dead. UPS is the only way to go , and a line active one at that.
Nowadays I dont run any pc or xbox or ps3 without a UPS connected to them and since then I have had 0 problems, so I would recommend a UPS to everyone, but I wouldnt recommend surge/spike strips as they are basically useless.
If their is thunder and lightning in my area, usually I disconnect everything from the mains, pc wise that is, and also take the phone line out of the router, as thats one of the main targets and if that gets hit, it will go into the router and from there to the pc via ethernet, so I try and cut out those sources of trouble when thunder and lightning is around which thankfully is only about once/twice a year.
Prudential came through for me with the pc that got fried, I ended up getting a whole new rig because they classed it as an electricity problem, which for me was a bonus as I thought I was gunna have to replace the rig out of my own pocket,.