For those who don't remember:
Our old equipment was struck by lightning a few years ago. It took out the station, the mounted projector and the video card on the local computer. That was when I started asking the same question.
Considering it left black marks on a block wall.http://weather.sms.rdale.org/about.htm
I came to the conclusion that unless there was great insurance, it was not worth it.
I don't think the grounding mechanism of my directv would make a difference either.
The school had too large of a deductible to make a claim.