I often eat my lunch while watching The People's Court and if there is one thing that Judge Milian has drilled in to my brain, it's that you should always take a picture before work is done to your house or car. In case any damage is done during installation. [Added per request of my mother.]
So, when it was time to send the water heater to the big metal recyclers in the sky, I took a photo.
Turns out all went well, but it's always nice to know you have photographic evidence.