What's the worst thing that's happened to you in the workshop?

[Jon]

I electrocuted myself whilst making a lighting dimmer. Probably the worst thing that's happened to me, I was literally shaking for the following 2 hours.

I had a very similar experience. Electrocuted myself on a standard household 110V circuit.

The electrical shock was less than a second long, but I was psychologically "shocked" for hours. You can actually get PTSD from electric shocks. Here's an example case report: Post Traumatic Stress Disorder Following an Electric Shock.