As a teenager I had a foreign car and had to take to a garage where they could order the parts for these. This same place fixed Mercedes and Rolls. One day I was waiting for my car, and I asked the the repair shop manager why a Rolls cost ten times what any other imported car cost. He looked at me with pity and told me to follow him. We walked over to a silver metal-flake Rolls and he popped the trunk. "Look in there!" he said with a Start Trek "Scotty" accent. I wondered if he was going to shove me in for getting on his nerves, but he said, "Look at the details, mon! "The inside of the trunk is painted and looks as good as the rest of the car outside!" (Is this still true so many decades in the future?) I never forgot that moment, obviously.
Scotty had a point. Whenever I watch a TV series, I see this in action. TV shows, unlike movies, are made in a kind of assembly line. A formula is found and like, say, that police thing with David Caruso, they repeat it ad infinitum, bad acting and all. But TV can be a work of art if there is attention to detail. I was watching the horribly-named "The Good WIfe" last night and was distracted by one of these details. A young couple was in a bar, and the girl is playing with her iPhone during her conversation in a way that people actually so all the time. It's a silly detail, but it totally made the scene play out in a realistic way.
Secondary casting, which is only "ok" in A Good Wife, is another detail that can amaze. Amazing casting is almost always an element in a good show. It was huge in the Twilight Zone for those who go back that far, but in more recent times, here are my absolute favorite supporting-role casting jobs:
The Sopranos, Brilliant. Primary roles set the standard for excellence.
Six Feet Under, Brilliant. Primary roles were great.
House and Desperate Housewives have both has a few really good secondary roles.

Sons of Anarchy, even more brilliant. I have yet to see one character not perfectly cast, to the most minor role. The attention to detail in this series is buried in the extreme violence that surely turns off a lot of viewers... or does it?
Anyway, whatever it is you do, are you looking at that level of detail, thinking "how can this be better?". Are you painting the inside of the trunk?