Teared up a few times, the 23 year video was powerfull, you just can't stay indifferent to that kind of thing.
Someone mentioned pacing in the first part of the movie, that was a bit odd for me too, but in the end can be looked over.
The cinematography, the directing, the sound, all amazing. I love that Nolan uses practical effects more then CGI.
The robots were also a bit exebrow raising at first, really unusual, I kept thinking how the hell is that practical.
But I got used to it and actiually got sort of attached. Also, you'd expect a more 'robotic' voice, too.
All in all, it was great, I bet I'll like it even more next time.
Also, dat organ sound, leave it to Zimmer to give every movie something special.