Great to hear that Rob,
I'd be laughing too, if it weren't for the actual injury factor of the video.
But, an interesting point you raise, humour and Safety don't as a rule fit together too well.
Especially when you're talking about people being injured or possibly killed.
Other side of the coin, I've seen some incredibly cheesy Safety video's in my time (I think most of them were made in the 80's) and you can't help but giggle at them.