Personally, I use the voice search feature to show off the system. I'd like to have some great looking Android games to accompany the other awesome features of the Shield. Game streaming is great, but I want something that runs native that would really impress my techy friends that are on the fence.
In my case, I just show my friends how reliable Kodi runs on my Nvidia Shield Console. It is known by many folks that Kodi is still kind of buggy on most Android powered boxes. But again, it runs on the Shield extremely well.
Live TV through Silicondust Homerun View, and voice search. Specifically I ask it what the show about the science teacher who deals drugs is.
I'm just always impressed about videos loading instantly at full quality. My PS4 has problems kicking back and forth from HD and 480p with hulu and it's connected through ethernet. My sheild is on WiFi. It's really cool
When you pause something in Google Play Movies & TV it shows who the actors are on the screen, people seem to get a kick out of that for some reason.