Buffy - 1x08 - I Robot, You Jane
This episode sees the introduction of Willow’s House. As far as I can remember, the damage done there is minimal to none, but it shows up just often enough to make the list.
Fritz, one of the students taken in by Moloch, sets a trap for Buffy in the girls locker room. A set of live electrical wires hangs from the ceiling down to the floor. It seems to be implied that it comes from the overhead light. If that’s that case, he broke at least part of the lighting setup to set the trap.
Also, this shit happens.