It made me realise I could use this series for examples of excellent world building.
Subtle subtext in dialogue and character interaction.
Lighting and shooting. Music (that scene where they bring the young man’s dead body home).
Planting of clues that contribute towards a larger story arc in self contained episodes.
In fact the whole series is just so darn good, I don’t know why it was cancelled. What’s your favourite scene from Firefly?