The Null Device
Wikipedia link of the day: Spite houses, or where malice and architecture intersect:
A spite house is a building (generally found in an urban environment) which was constructed or modified because the builder felt wronged by someone who did not want it there. Typically built to annoy someone, in most cases a neighbor, these buildings serve primarily as obstructions, blocking out light or access to neighboring buildings, or as flamboyant symbols of defiance. Because actually inhabiting such structures is usually a secondary goal at most, they often have strange and impractical layouts.