Three or four Cecil Adams or Straight Dope Message Board references in each movie: line of dialogue, an allusion to a column or thread, a prop, a Slug Signorino cartoon, a character name, whatever. I promise to pander shamelessly to this demographic.
Soundtrack will always include something by Prince or Louis Armstrong.
Slow-motion action sequences, often with trench coats flapping in the wind and white doves flying… and everyone has to have two guns at all times
Two characters who appear in all my movies, who happen to be goofy drug-dealers, or robots, or possibly both
Creepy clowns and a generally dark, surreal, German Expressionist look to everything
a main character says “Her pendulous breasts” in Mandarin or German or something, someone else says “eh?” and the character looks at them like they’re nuts and says, “never mind.”
Beavis & Butthead on a TV in the background somewhere
a serious attempt to incorporate a llama or llama byproduct into the plot