And this one isn't post-punk in the slightest! It's probably best descrived as "ethereal dream pop" - dark, ambitiously atmospheric soundscapes that incorporate elements of both ambient and electronic music, and which can be seen as one of the parent albums of the late 80s/early 90s shoegaze fun explosion. Another blog I read once said that the world is split into two groups - people who love this album, and people who haven't heard it yet. I think that pretty much sums it up perfectly. Enjoy.
Cocteau Twins – Treasure (1984)