Paul,
On the home theaters, they are quite common in the larger homes. I would guess at about the 5,000 sq foot and up. Also the larger the home the larger the theater. Some of the smaller houses, 3,000 to 5,000 sq ft, have just a room with a large screen TV and a couch, but it can still have the surround sound. The larger homes actually have seating for up to 20 and the very large screen or a projection screen TV. Some even have their own wet bars next to the theater area.
Harold
