Yes, I bought the Amazon Fire TV as soon as it was announced. It’s tiny, sleek, a pleasure to unpack and set up, and very responsive. I haven’t tried the optional game controller yet, but I did buy one, and you get a free game with it.
The voice search works quite well, in my limited testing. Sadly, while it correctly recognizes “Stargate SG-1”, it cannot directly navigate to “Stargate SG-1 Season 4 Episode 6”. Someday.
Also, it doesn’t appear that the Crunchyroll app has been ported yet, which means that the anime selection is mostly limited to dubs. I hadn’t realized how wretched the voice of Hermes was in the dub of Kino’s Journey.
[Update: I took it over to a friend’s house, and we couldn’t get any audio over HDMI, using two different cables. Works fine at my house, completely silent at his. We tried every option that was available on both his TV and the Fire TV, but no luck. I don’t see any mention of the problem anywhere yet, so it may be limited to a specific hardware configuration.]