I'm really lagging behind on this one, watched the movie last Saturday only. I possibly went through a wormhole, time dilation you know...
So overall, that's a very good sci-fi movie. The way emotions and psychology of the characters are rendered is a major part of it. Bringing relativity, which is a "cold hard theory" into human relationships is a bright idea.
The strongest moments of the movie, for me, are probably :
- When they takeoff from Miller's planet and meet with Romilly, that is now nearly (with the hyper-sleep variable) 23-years older. He is so normal, calm, and so different at the same time. Great scene. When you realize what it means... waiting for 23 years in that context... that's fascinating and horrible at the same time.
-(grown-up) Murphy's message about Dr. Brand death and lies. Cooper's emotions when he discovers at the same time the 33-years old adult that his 10-years old girl has "suddenly" become. Nice use of the relativity again.
-Inside the tesseract : Cooper being overhelmed by the emotion of seeing his girl and his own past while being completely lost in a completely weird and alien environnement (5-dimensional, in fact).
Of course, as said above, they are things here and there that seem weird.
1- The "Blight". A sort of living organism that lives into dust storms (where do they come from in the first place ?), kills specific crops species and breathes enough of the Earth atmosphere oxygen to asphyxiate an apparently decimated humanity in a matter of 2-3 generations ? Have they heard of say, algae, as an alternative food resource ? Weird.
2- The Rangers. Those ships are weird. They are launched from Earth with an heavy launcher that looks like a 2-stages Saturn-V, but can take off on their own from Miller's planet (1.3 G) and then again from the iced world (0.8 G). That almost beats a Deltaglider !
3- Miller's world. A planet covered with 20-30 centimeters of water over what seems a perfectly even "ocean" floor ? Also the proximity with the black hole causes a whole lot of hard-to-explain things. Well, a lot of "fi" in the "sci-fi", here.
4- Interplanetary transfers in a system including a black hole (if such a thing as a system including a black hole is possible). The amount of Dv required must be insane, especially if you initially warp out right on the outer edge (ergosphere ?) of the black hole, which seems to be the case : that's an extremely deep gravitational well to get out from.
5- Surviving an ejection and an EVA in a black hole and ending in a space/time-made tesseract built by unborn "humans". The particles that probably have a near-c velocity and shred Cooper's ship into pieces seem a dangerous environnement for a mere spacesuit.
6- The "hyper-sleep". Its unclear if it prevents the body from ageing, or only slows the process down. With so low power requirements that Mann was able to survive inside one for 10 years, on a very cold planet (it seems that the fluid inside has to stay warm, there is always some vapor over it).
7- Robots. Their design looks very, very advanced. A cube of metal that can divide in a variety of configurations, with no apparent axis or wheels... A bit ahead of some other stuff.
But overall yes, very good sci-fi movie. It doesn't pretend to be 100% accurate after all.
Edit : oh yeah and the relativistic effects rendering. Lots of work here, and it shows.
Edit 2 : oh yeah and the soundtrack of course. Hans Zimmer rules again !