Google TV does a lot of exciting things, but if you want it to work up to its full potential, you'll need a DVR that's compatible with it. At the moment, there's only one provider that can give it to you – DISH TV.
No matter the advantages of satellite TV, there's one big disadvantage that's been haunting satellite services since the beginning. Mounting a dish outside of your house or apartment really changes the look of things and, depending on your situation, may not work out anyway.
When the Xbox 360 launched in 2005 one of the most interesting possibilities for the system was the possibility of using it as a set-top replacement for an existing cable box. It wasn't brought up much since then though, and it seemed to be one of those things that wasn't ever really happening.