Blew me away at first... but then plot holes began to surface

Rating: 8/10 (16 November 2014)

Amazing sound, amazing photography, amazing cinematography... Be prepared to miss a couple lines of dialog when the sound gets so loud it's drowned out briefly 3-4 times during the film.
A wonderful ride that I, as a Sci-Fi fan, greatly appreciated. The science holds up well apart from a couple crucial details. The plot has some unnecessary holes that let it down for me.
Spoilers follow:
Science goof: Planet orbiting black hole near the event horizon experiences time dilation. "OK" signal still received from explorer who landed on it. But if seconds on the planet are stretched to many hours off-planet, the "OK" signal would be stretched too and they theoretically shouldn't receive it. This whole misadventure makes the characters look dumb for being fooled so easily.
Brand (Hathaway) needs to make big speech about love when they are making decision about which planet to go to next (which could mean life or death) instead of simply acknowledging the conflict of interest and sticking to her original reasoning, which sounded reasonable to me.
...and then Cooper, recruited at the last minute as a pilot, just goes ahead and makes the life-or-death decision for them. And Brand lets him. None of this makes sense and the whole "love is the 5th dimension" speech is just irritating pseudoscience. Shades of Luke Besson's 5th element.
Having trouble dealing with Matt Damon's homicidal character. Did he really need to kill Cooper to keep the truth about the planet a secret? Was he just bat-s*** insane? I guess so.
I had trouble with these unseen other "them" 5-dimensional beings messing with us too. I guess the whole "tesseract" sequence was a way to tie the movie together nicely. Which is exactly why I don't like it, even if it was visually stunning, and quite touching despite the overly convenient neatness of it.
I don't think Christopher Nolan is any good at plot, and I think he will make better movies if he doesn't try so hard at that.
Good characters make for a good movie, unfortunately for the most part the characters in this movie are quite flat and there is little development. The two main female protagonists make unexplained unlikeable decisions, and the male counterparts are not much better.
Still worth seeing for the amazing set pieces, the visuals are at times mind-blowing, and the science is sound enough to tickle the mind of anyone with even the smallest knowledge of relativity theory, quantum and string theory.