If you don’t regularly visit Extreme Instability, then you should. This guy is a storm chaser, and most importantly, a storm photographer/video recorder. He’s captured some really awesome stuff and sells his DVDs.
Anyway, he has a really awesome sequence of photos on his blog of chasing lightning that was striking the local radio towers.
Go to the site and look at them. You totally won’t regret it. This isn’t even the best one. It’s very helpful if you’re trying to draw lightning, and need some really good reference material.