Google TV basically does the same thing and a lot more, though some of the things it does are less refined.
I will say if you have cable, especially a provider with a crappy menu system like comcast, it will change everyrthing.. my wife is crazy about our revue, it just really makes our cable useful, and it's so painless now to find what we want to watch, when a movie comes up that is half over and she is interested and wants to see the whole thing, it will show us right when to check back.