Am a big fan of the Nolans from Memento on out. Saw Interstellar in IMAX -- found it mostly slack at best. Last thing I expected from them although I suppose 'Inception' might have been a clue to the path. Big disappointment. Some vague SPOILERS below.
LOTS of space/time mumbo jumbo; conversations, equations, etc. that create no drama, make the actors look mostly silly (not their fault, tough to spit out a lot of this gobledygook stuff) that a) really doesn't make a ton of sense and feels fudged (so why dwell on it?), b) sucks any tension out of the moment (and the film as a whole), resulting in c) proclamations like 'We're here to save the Earth!' Laurence Olivier would struggle with that one if he had to do it straight. The film flirts with goofy quite a bit. An of course, solving all the space/time conundrums happens remarkably easily at the right moment.
A couple of oddly pseudo-tense scenes that have very little if any payoff: to a lesser extent, the cornfield drive thru. To a baffling extent, the docking sequence. Got the sense that they felt they needed to try to snap the slack out at that point and it felt forced. That sequence was also shot like by-the-numbers TV action; very un-Nolan-like.
After all the metaphysical claptrap (which I enjoy if it's cogent -- see any episode of Cosmos (or even Star Trek) for more concise and dramatic explications), the story basically boils down to a couple of astronauts wrestling on another planet. The movie starts out with A ambitions and devolves to second-rate B (which could have been fun if that's what the movie wanted to be) -- it feels wholly out of character with the whole dying earth/wormhole/fate of mankind setup, some of which was pretty good.
Trying to get back to A at the end is a whole sequence that doesn't work at all, and that's partly because the whole time/space stuff was never honed in a way to give it dramatic context. (Inception fell apart as it went on in this way too, but was cooler to look at) It made no real sense (despite using a 'time-tested' scifi device), and felt increasingly silly. I also didn't find it to be a convincing visual design, but others might.
And speaking of visuals -- unimpressive, even strangely so. From the lighting in the ship to all the 'galactic setpieces', really nothing of distinction.
Nightcrawler looks like the movie to see right now.