I liked the film overall but I thought that the ending was too pat, too nice, too literal, and felt like Spielberg. I liked when McConaughey entered the "fifth dimension", the tesseract reminded me of Borges and I thought it Nolan made a bold narrative decision.
I didn't, however, like his return to our four dimensional reality, starting with the overdone and over-convenient waking in a hospital bed. And then he is able to see his daughter right before her death before setting off to find Anne Hathaway. I would have liked a more abstract and bitter-sweet catharsis.
I also thought the decision to make Casey Affleck a bit of a psychopath, and the whole burning of the crops to be a cheap attempt to build unnecessary tension. Plus the hug after Murph quickly explains that the ghost is their father and the proof is in a spasmodic watch was the biggest face palm moment.
I had some other nitpicky complaints, but I did like this. 8/10