This plugin for blender was a real life safer for me.
Basically what it does is, it transforms blender more into a level editor by adding automatic texturing by world coordinates.
Imagine having large architecture models and you want to texture them, with default blender you would have to unwrap them and adjust the size of the UV-maps by hand, adding possibilities for mistaks, this plugin solves that for you, just chose a size of the texture and texture everything with a single click and every face will be of equal size proportions.
You can also check out the Blenderartists forumtopic for it for more information: http://blenderartists.org/forum/showthread.php?236631-Addon-Simple-Box-U...
PS: The file belongs into <yourblenderversion>\scripts\addons\* in your blender folder.