If TV shows were footbll teams;
The Sopranos =Manchester Utd. Pure dominance.
Mad Men = Chelsea. Glossy and polished. Pretty flawless
The Wire = The Arsenal. Grainy, sometimes a little off but often genius. Best show on TV "on its day". Gradually increased it's budget season after season.
Battle Star Galactica = Liverpool. Started full of hope and quality. Fell away towards the end
24 = Spurs. Helter skelter, random nonsense. Delusions of granduer. Only ever get half a good season
Homicide = Everton. Once one of the elite, but now a bit outdated.