Surround Sound — From a Single Speaker
See this report from the Washington Post on this interesting topic: "For surround-sound audio as immersive as the HDTV image, you need half a dozen speakers carefully arranged around the room with unsightly wires running to all of them, unless you pay professional installers to cut open your walls.
Now, new systems promise to eliminate the clutter by delivering that in-the-middle-of-the-action sound from a single speaker that sits above or below your TV set."