I didn't expect to enjoy this. Given the subject matter, I thought it would just be too bleak, and to be fair it is, but the acting was excellent throughout, the story was utterly engrossing (and something of an eye-opener), and it made me very intrigued to know more about the disaster, and nuclear power in general, something I've never given a great deal of thought to previously.

More importantly, it managed to present an engrossing story without ever cheapening the memory of those who died and suffered in real life. I'd definitely recommend it if you haven't already seen it.