The Shield gets really good once they start to serialize the show properly. I think what Anthony Anderson does in season 4 of that show is the most surprised I've ever been by an actor , I just couldn't imagine that he had something like that in him. The last season of The Shield might be my favourite final season of TV ever, and especially one storyline (I won't say which, but people who have watched it probably knows) is just absolutely fantastic and could make for a great movie by itself.
The Shield is absolutely fantastic. Watch that instead of the West Wing.
Also, watch Southland. You're welcome.