There are some usefulness of interactive TV if there is only 1 viewer. For a family, browsing your facebook while watching TV might not be an acceptable behavior. On the other hands, what if a tablet device can be effectively integrated into the TV which allows viewer to interact with the TV?
I see two themes unfolding here. First pay TV seems to be growing in an unexpected direction - Netflix. Many of us who never imagined paying for TV started paying for cable and are now paying for on-line Netflix (especially since the DVD service have become so expensive). Secondly, the use of MEMS enabled remote controllers seems to be taking off. The wii controllers enable interaction with the game (TV). Making a user friendly MEMS TV remote is just a matter of the iPhone app gaining a little more functionality and industry traction.
Well, it turns out that you can use the "move" remote on the PS3 to control navigation. I find it to actually be useful. In the case of the PS3, you can sling left/right/up/down if you need to go fast... One notable application (netflix) does not completely support the remote...
Using MEMS in a TV remote to enable control by gesturing sounds like a cool feature, and indeed it provides a usable way to scroll and select among bunch of interactive TV apps that you might want cluttering your screen.
Or then again, you might not. It will be interesting to see how U.S. cable and satellite TV subscribers respond to this system. I remain unconvinced that consumers want their TV to be more like a tablet or smartphone, with "an app for that."
Most people watch TV for movies and shows. The idea of interactive TV and events is new and there is not much of an infrastructure inplace to really exploit it. In areas where you are getting modern infrastructure installed in high density population centers you can begin to start, but for most current users, the TV will remain a passive device.
Many Chinese Television/LCD-TV manufacturers have started putting MEMS in its remote controllers, but frankly speaking this is not going to much value addition on the viewing experience although this can add-up in the list of additional features.