VoG™ is right - I had a strike not far from me a few years ago and it made the monitor glow orange for a split second. But I have a surge protector, so I think if I didn't have that it would have blown and shot a shower of broken glass in my face. The TV picture collapsed and lost it's colour for a couple of seconds and Sky box reset itself, but the PC stayed on and stable. The TV and Sky box aren't plugged into a surge protector but and the PC equipment is - so it's best to have a surge protector just in case. Also best to watch these storm warnings because even though a strike on your house is quite rare, if it does happen it can cause a lot of damage.