Thought a thread for this miniseries would be good, as I've only seen discussion of the trailer up here. As of today (16th May) there are two episodes out, and a companion podcast for each (though I've not listened to these yet)
I just watched both back to back, and I'm blown away. This is some very well made television, and somehow manages to be simultaneously nightmarish, and fully gripping. That this is based on real events is all the more amazing to me, and after watching the revelation about the exploding water tanks in the second episode I'm astonished that the world is as unscathed by this disaster as it is.