Well, people kept asking about it, so I finally went and saw Interstellar and found it much better than I had expected.
Its science is pretty ridiculous, and the last hour does not fit too well with the first two, but if it is looked at as fantasy instead of science fiction, it holds up pretty well. And it certainly is never boring for its full three hours.
Pacific Rim qualifies as almost the ultimate special-effects sci-fi movie in that it involves almost no plot and includes almost nothing but robots and monsters the size of 25-story buildings. And it proves that you don’t need a plot to be illogical and inconsistent.