I'm a fan of Nolan (more so for the non batman movies) and this movie was definitely worth it. I think lot of the rest of the audience agreed as many actually clapped at the end - something I don't recall happening in a movie theater in a long time.
The movie returns to themes of previous movies, particularly Inception, most notably such topics as time and reconciliation. Won't say more so as to not spoil it. Despite some surprises, the main point of the movie is not really about twist endings. And even though some parts stretched plausibility somewhat, it wasn't intrusive enough to dampen the effect.
I agree that if Speilberg had done it the sentimentality factor would have been raised twice fold and there'd be some dumb CGI creature pontificating. He managed to spoil A.I. that way in what had been up to the end a pretty good movie. Nolan gets pretty emotional / dramatic without falling into the sappy trap.
I can't say I was too impressed with the IMAX version (at least not the digital projection version I saw - did not see it in 70mm film). Sure the image was large, but some important things such as the black levels / contrast, color saturation and even sharpness were to me sub par vs even my "entry level" JVC projector at home. And I'm not a super big videophile. I lay the blame on sub par digital projectors particularly if their calibration and / or maintenance is not kept up. I honestly think at this point I'm done going to see movies at a commercial theater with their ever rising ticket prices. I don't think many commercial theaters really care much anymore about the quality of their picture and sound.
Sound quality though for this movie at the theater was decent. Sure, it got loud and wall shaking rumbles in some of the space craft scenes - but that's what you'd expect. I do think sometimes the music score was amped up too high for unnecessary dramatic effect. I was not aware people were complaining about the sound. I will admit that at one or two moments - most notably a key hospital scene - I wasn't able to make out the dialogue. Glad to know from the linked article that understanding it wasn't critical to the movie.
Anyway - again I really recommend this movie - but if you have a nice home theater - watch it there. You'll likely have an equally good experience and won't have to hold your bladder all the way through.
