WARNING - contains spoilers.
Just saw it in a rare 70MM presentation at one of the biggest screens in London.
All the hype is justified: it's ambitious, cerebral, epic, an 'event movie', a new "2001" for the 21st century, with a lot of grand themes.
Zimmer's score was amazing - like an avante garde church organ in a cathedral. Although not the first time an organ has been used like that: Morricone used one in the lengthy zero-G transfer sequence in Mission to Mars.
I could only discern about 40% of the dialogue - did anybody else have an awful audio mix where sound effects and music drowned out the dialogue track? Even during important plot points. Gotta grab the script.
MM's acting was amazing, as we've come to expect. Very emotional at about 5-6 key moments.
Matt Damon's (stunt) casting was unnecessary. Sorta takes you out of the movie for a while. They could have cast a character actor for that role. And what he then proceeds to do, doesn't really make sense.
Typical Nolan editing: not much explanation to anything. He just expects you to hang on. For example it took me a while to realise there's a talking robot in the capsule with them.
Why could they take off from the second wave but not the first? Surely their analysis of the planet would let them know they'd be massive tidal waves if it's so close to a black hole? So what's producing the light in the system?
Are real practical effects better than CG, green screen, digital effects? A few years ago, unquestionably yes. But since Gravity, it's not so clear that practical IS ALWAYS better than well produced VFX. And it's not so clear that film projection is superior to a UHD digital projection.
Amazing to see such a short credits list for such a big movie. Hardly any CG artists. At the end of the Hobbit the credits seem to go for ages.
The science of Interstellar? Caltech professor Kip Thorne was advisor on the wormhole (just like in Contact) and black hole physics, which is all very speculative. The hole seemed to be portrayed with an accretion disc which normally emits a lot of harmful radiation. I didn't understand how the robot was supposed to transmit from the other side of the Event Horizon.
But anyway, in the end the black hole was actually another higher-dimension projection from aliens (or future humanity?) which was connected to the worm hole which was connected to Saturn. The last act was 'vague-d up' like 2001, so everyone will see it again and talk about what it means. Like Inception, it's a good way to double your box office. 
Dust bowl earth - didn't see much of the rest of the planet. The landscape looked okay on all the wide shots.
AI humour re: honesty settings. Yeah, as if you'd want anything less than 100% in survival situations.
Love as some cosmic divine force: evolutionary psychology has no problem accommodating why we still care about people who are deceased.
What was with the early drone sequence? Didn't seem to go anywhere or pay off?
So what was the solution that Cooper transmitted to his daughter via Morse code? Was that the most efficient way of communication? That, and ghost-like book throwing? Not very sophisticated for 5D higher beings. Either information can get through or it can't.
Is the Rama tube around Saturn (Cooper Station) the solution to the emigration problem? Which planet were they moving to?
Loved the sentiments about always looking back into the past these days instead of the future, like we did 50 years ago. The golden age of forward-looking sci-fi is over. It's all Game of Thrones, Downton Abbey, Mad Men, Middle Earth, post-apocalypse, and hipster vintage/retro. Even Gravity was a 'period' film in that it featured the Shuttle.
I'll gather my thoughts more after a second viewing in another cinema with a (hopefully) better dialogue mix.
So what did y'all think?
