I have spent some good money on lightning protection, because one night while watching tv, the set pop'ed. And dead. The lightning got in to the co-ax 75 ohm cable. It pop'ed both tvs and one was not on. No pins hurt because it didnt get in the regular electrical system.
Now I run around and pull plugs anyway. Monster makes some good line conditioners. My voltage ranges from 114-122, and I have so tube type audio gear, plus the pins to loose. I highly suggest the Monster power boxes from my experience. They have protection as well as conditioner for like 10 plugs plus co-ax and also phone lines.