Perfect TV shows.....

There are some shows I think are perfect, they aren't necessarily my favourites or the most entertaining, but they give the impression the writers, producers, directors and actors never once thought, that'll do. I loved breaking bad and id say the acting and directing both are near perfect, but the writing was a silly sometimes, really good writing, but just sometimes getting from a to b was a bit silly. Shows for me qualify as perfect. The League of Gentlemen (the three main series anyway) The Remake of Battlestar Galictica. Fawlty Towers . I've just finished the first series of the Expanse after giving up a couple of times, if that carries on like that it might get on the list. Any additions....not necessarily favourites, but faultless Tv?