Nice, but with room for improvement
Let me start by saying that basically, I like it. The graphics are nice, the music and sound effects work for me, and the game itself is not inaddictive (due to the medals you can get, mostly).
That said, there's one thing that I very much dislike, and that's the fact that it's so US-centric. I imagine it'd be difficult for you to avoid for topics like "TV", but for "Movies", "Sports" etc., it really should be possible to come up with questions that even an international audience will have a chance at answering.
I really did find this rather frustrating, so I'll take away two stars for that. Sorry! But other than that, I rather liked the game. :)