@DarkCloud
I found it excellent too. It creates a beautiful and very alien world thats very believable without just resorting to "plants are purple".
That said, be warned! I couldn't finish it (yet?), because it's too creepy and gruesome. There is a fair bit of body horror!
The entire world in that show isn't just alien, it's very hostile. Really makes you appreciate being a member of the dominant species here on Earth...