Recessed outlet hardware has a faceplate that is set deeper into the wall than a regular outlet. That means it prevents plugs and connectors from protruding above the surface of the wall. It's aesthetically better looking, and in certain applications, it can be a lifesaver.
• Install one behind a wall-mounted flat-screen TV. Grab a cover like this one and you can run all of the important cables seamlessly between your wall and the TV; if you're running speaker cables, something like the Arlington Industries Single and Dual Gang Recessed Electrical Boxes (shown above) may fit the bill. No more gap between the TV and the wall.
• Recessed outlets behind furniture. Do you have outlets tucked behind furniture you'd like to keep tight to the wall, like a boxy sofa or shallow bookshelf? Switch them out for recessed hardware.
• Install recessed outlets outdoors. Use one with a slim cover and avoid those unsightly bubble outlets you're used to seeing outside.
• Recessed outlets in the bathroom. These can help you maximize small space, and help keep electrical hardware out of the splash zone.
• Use them in the kitchen. This post on Popular Mechanics lists several reasons why recessed oulets work great in the kitchen, but it all boils downt o this: Recessed outlets along your backsplash allow you to push small countertop appliances flush against the wall. Yay for more counter space!