Some of the sketchy wiring found in the house I am renting.. I haven't fixed this yet because moving the refrigerator is a RPITA.
Most of the other sketchy wiring was fixed before I bought a digital camera, including a subpanel with no clamps on the romex, K&T brought into the panel thru a knockout w/o any bushings, missing ground bus in subpanel, with ground wires twisted together.
Other problems included a exterior fixture mounted directly to a shed, without a box, flying splice inside to a cordset plugged into a combo siwtch/outlet on a box w/o a romex clamp.