I was setting a office up in Dubai, and as one of the first on the ground I got to see them installing the electrics.
The guy that was doing the installation needed some light, so he took a light fitting down stripped the wires and jammed them into a socket...
When I saw it I gave him a bollocking and told him everything had to be done properly with the correct earth etc.
He pulled the cable out stripped the wires back and shoved the 3 wires into the socket rather than the live and neutral!
When I came round again I gave him another bollocking and said I meant plugs and sockets.
At the same place we had a sub contractor put in our door entry system. It worked, but when I had a reason to poke my head in the roof space I was horrified.
There was power running over cat 5 cables, cables and relays left hanging, wires twisted together. How it didn't stop working / burst into flames cause a rip in the space time continumumum I'll never know.
Another bollocking and it got ripped out and installed properly.
The moral of the story... always watch over the subbies and be prepared to poke your head in the roof / floor space before signing off :)