this instructable demonstrates how to hide a wire inside a wall with carpeting. it does not involve any carpentry, plumbing, or dog breeding at all. it is especially useful for making rooms look nice, making sure cleaning ladies/ moms/ girlfriends/ wives/ insane llamas don't rip up wires in an attempt to "clean up".
http://www.instructables.com/id/how-to-hide-any-wire-in-a-wall/