I saw this article on news.com which discusses connected homes and a new working group, the "Digital Living Network Alliance" which has formed to get TV's, PVR's, HiFi, Camera's, PC's to all play nicely together, according to the report, less than 6 percent of internet connected homes have connected their game consoles or home stereo system to the network (so what about all those XBOX live players ???).
I have a wired and wireless network running at home which connects the PC's, Media Center, XBOX's, Electronic Picture Frame (when I get the code finished) and other devices - with the introduction of technologies such as Web Services for Devices it should become easier to plug devices onto a network and have them play nicely together.
Assuming you had Web Services for Devices up and running on all your devices, what scenarios would you want to enable in the home ?