The only game that would even make think about it is a Bungie made, mainline Halo. Titanfall looks awesome, but I am buying that on the 360. I WOULD say a proper Banjo 3, but Rare isn't capable of that magic anymore.
I think the major selling point are voice commands and being a media hub for TV. But considering this is suppose to be a game console, that may or may not be such a good thing.