The two-paragraph essay

The format is simple:

  • Make an observation
  • Give your subjective analysis

Great examples of this include Paul Graham's post about Power vs. Charisma.

I think an essay can be longer and still follow the same structure, and the impact is still profound. Present the data at the very beginning, then editorialize. It helps the reader trust you and prevents you from subconsciously burying the lede.