This is one of the most challenging HDTV wall mount projects we have ever undertaken.  The client wanted an articulating wall mount, but also wanted the HDTV to have the ability to sit flush with the wall.  To accomplish this feat we brought in a custom cabinetry builder to construct us a mount housing inside the wall above the fireplace.  While this remodel was in progress we ran all our cabling and had an electrician install a new power outlet.  The cabinet came out perfect and all that was left was to mount the TV to complete our clients vision.