Pretty sure there was a thread that was active around the time of season 3 or so. Yes it is a great show, though I do kind of miss the dark comedy of the first season, which has been mostly dropped in favour of over-the-top descent-into-evil drama.
Superb serious, its a mystery why 5 USA or whatever the channel is called stop showing it.
Apparently it never had a strong viewership in the UK when it was on (not helped, as so often with cult US shows, by ridiculous scheduling). And I imagine Sony are asking for a lot of money now, given all the hype and praise in the US. However, Netflix UK have got the first four seasons and supposedly the fifth (first half, presumably) will be added next month.