>Be a customer
>Ask to reduce number of servers you rent at our company
>Agree to a date when the one server you no longer needs will be due to be disconnected and taken apart
>Date comes
>I have the honors of sending the final /sbin/poweroff
>All goes neatly... until...

The web that used to be there, now moved to another one of their machines, goes down, wtf???

Oh. a 500. What?
Checks logs...
Cannot connect to Database.
Wtf? Local database works... Oh. OH. OH MY GOD.

>Turn the server back on and tell the customer to fix the app to no longer connect to that machine

Sometimes, being a sysadmin can be a real fun!