I had a chance to get some hands on time with Google TV from both Sony and Logitech. Let's start off and agree that re-inventing the TV experience is a necessary but also incredibly difficult task. Necessary because with the exception of the DVR, television simply has not changed that much in the past 50 years. Yes, we got color, then we got HD; but the overall experience has not drastically changed. Re-invention is in essence what Apple desired and still desires to do, and what Google is now putting a stake in the ground in order to attempt as well.
I say re-inventing the TV experience is difficult, because it is controlled by the service providers like DirecTV, Dish, Comcast, COX, etc. These service providers offer their customers a completely closed system in which to access their content, or premium content. So for a company like Apple or Google to make inroads with a TV experience that is as tightly integrated with a customer's service provider is an uphill battle.