Excellent movie.  Not super exciting in an action sort of way, but gripping still.  It requires some thought and leaves you thinking when it is over.  The idea is fascinating and has me thinking about my own world and my own language.  The story, despite not being very action-based as I am used to, engaged me and definitely kept the stakes and suspense.
The construction of the movie was marvelous as well.  The director did a great job.  It felt fairly artsy, like every scene was very carefully crafted.  Each shot was deliberate.  And the sound. . . wow.  There wasn’t an epic score like Star Wars or Lord of the Rings, but the sound was perfectly designed.  The music gave the right mood, but the true perfection was in the smaller sounds.  The world felt so real simply because we could hear it so well.  And the use if sound really made you feel what the characters felt, experience what they experienced.  It was beautiful.  The acting was great as well.  You could see every thought and emotion that crossed their minds written out on their faces. 
Overall, I thought this was a remarkably put together film.  Not my usual pick, but I am very glad I went to this one.