The Martian ... 9/10. One of the best sci-fi movies I've seen in a long time. Clever cross between Castaway and Apollo 13.
I figured it was going to be one of those exhausting 'catastrophe-a-minute' sci-fi disaster movies (like Armageddon, for instance) ... where literally everything goes wrong, all the time, until the very last minute, and you leave the movie tired rather than entertained. It wasn't. The science was good, which is unusual (see, for instance, Armageddon, or, God-forbid, Mission to Mars). The problems weren't just random nonsense, but a genuine progression through the process. The solutions were clever -- though, having seen Apollo 13, I wondered how they didn't think of the 'gravity slingshot' solution sooner.
All-in-all, a very good movie.
SnakeDoc