Nvidia has made a portable Android-powered console called Project Shield.
The Android-based system runs games from Android's Google Play store and also allows users to stream games installed on their home PC for play on the Shield's screen. Games demonstrated during Nvidia's press conference included Hawken and the PC versions of Need for Speed: Most Wanted and Assassin's Creed III.
Because Steam now has its Big Picture mode, the Shield can be used to navigate the store without having to move back to your PC.
Well damn. That seems pretty interesting and completely unexpected!