according to Vincent Dureu, in charge of Google TV this is why Google TV is needed :
Even two years ago you would have said that telephones are mostly for making calls, maybe for email and texting. Today, we know that phones can actually do a whole lot more. In the same way, people say that TV is just for watching TV. But, like the phone can be used for more than making calls, we believe that TV can be used for more than just video. Also, there’s not enough shelf space for the stuff on TV; not even with online channel guides and your PVR access and your racks full of disks. The shelf space should be as big as the web.Google TV, which will come with the collaboration with Sony, intel and Google is powered by Google Chrome initially so developers can build web apps as well as Android apps to run on Google TV platform but for now the SDK for mobile apps haven't been released.
with the introduction of Google TV Google also introduced their new mobile OS Android 2.2(FroYo) and which has a lot of new features over its predecessor Android 2.1(Eclair).
the new version is pretty much fast and it has a new JIT (Just-In-Time) compiler to boost the performances. here are the pros and cons about the newly introduced FroYo
cheers,
Kesh.