The big news these days emanating from the "Beeb" is that they have bought rights to The Wire, HBO's series based on and in the City of Baltimore, Maryland.
I have watched every episode (something like 60, I believe) and in some cases watched several of them several times over. This really is adult* TV at its very best. So my advice is, go and get hooked, you won't regret it. One caveat, though, is that you will have to work at it, The Wire is not easy entertainment.
(*Adult for the language and some pretty raunchy sex scenes)