I just tried it out for the first time last night. It speaks flawlessly to my TVs (which I expected, as they're Samsung TVs) and ok -- but with a slight delay -- with my Dish box. I was impressed TV-wise that I was able to get it to open the "tools" and set the sleep timer -- somewhat more advanced than just on/off, volume, and channel.
I can't yet figure out what to use this for other than as a novelty. I'm sure someone will figure out some brilliant way to combine this with tasker and to do something neat in the way of TV automation, but I have yet to think of what that might be.