Really enjoyed. Possible spoiler but a minor thing.

Rating: 9/10 (5 November 2017)

Firstly, I watched this yesterday and the nearly 2 1/2 hours went past in a instant. Secondly, I have to agree with the previous review about the science but disagree about the one star they gave. My background is arts, not science but even I knew they were talking gibberish most of the time. Here's the minor spoiler. Damon's astronaut doubled the battery life on his "rover", the moon walker thing, despite being a botanist. So, a guy who grows plants can do that, but NASA can't? I didn't bother really with the science.
What we do have, is a wonderful story about an astronaut left alone on Mars as he is presumed dead. Leaving aside his Stephen Hawking science, we see his determination to survive despite overwhelming odds. His tenacity and dry humour against insanity and slow death.
It could be a one-man show for Damon and he totally steps up to the part. But, we also see the corporate/NASA element back on Earth with strong actors like Sean Bean and Jeff Daniels. Full credit to the actors playing Damon's crew as they return to Earth from Mars.
This film doesn't have the obvious signature of Ridley Scott, he just lets his actors get on with it. Oh, the disco music is incongruous and very amusing.
Ignore the science, enjoy the movie.