im not sure if this would be a cost effective idea for best buy (or any b&m), but if the numbers made sense this could be the answer that stores need to stay alive in the future.
with the GeekSquad concept in mind, basically someone could set up an appointment where a professional can come over and help/inform/educate the potential customer and help steer them in the right direction and get them the product that would fit them best. best buy can charge a small fee if the customer does not end up buying anything from them and offer it as a free service if the customer does end up buying something. an idea like this could help someone that is not that tech savvy and doesnt know what computer, tv, or fridge would best fit their needs and obviously help you guys get that sale. you can go one step further and throw in the white glove installation that amazon does.
if this concept makes sense financially, theres no limit to what you guys can offer the customer once youre in their living room.