Im considering one. It's not really expensive (considering most Android games are free, or less than $5), and I really like the idea of streaming games from my pc as well. I still need to read a bit more about the streaming, though.
Also, does this device only support Android games, or can you actually install some other apps?
Do all games come from the Play Store/Nvidia homepage, or can you install third party ones?
While streaming games from your PC, is the game also shown on the monitor? Or can you use the PC for anything else? What if you have several monitors?