I watched 3 seasons so far, and I think it's brilliant, a must watch. When I watched the first season, I wasn't immediately convinced - 'oh, one of those again' - but from there on out it just kept getting better and better, which is a rare thing in a series. Really great stuff, and highly recommended. It's maybe most comparable to Deadwood of Pirates, in that it has a (pretty solid btw) base in reality and very strong characters. But with far more spectacle and density than Deadwood (that is not necessarily a better thing, just different).
Season 3 which I watched last month, is the best season by some distance.
I also liked Dirk Gently, and tried the OA but after a few episodes I got a bad feeling about where it was going and dropped it.
While having the flu last week, I watched the Good Wife by the way, and though personally I think there are a few weaknesses in the cast (including the lead role), there are also some great actors in there to make up for that, and overall the show is pretty enjoyable.
I also watched season 4/5? of Homeland, the one playing in Berlin, and thought it was actually pretty good, though it also made me feel like it would be a good final episode and left me without wanting to see another season. It's a lot like a good Tom Clancy novel.