…Every graphic and keypress on their computer makes blips and bleep sounds.
…Any time someone says, “Enhance Image” and this blob of grain and fuzz becomes in immaculate, pristine image after someone applied the Mosaic plugin in After Effects.
…
Two minor characters talk about how awesome/deep/tragic the protagonist is, behind his back.
…At the very moment the bad guy is about to pull the trigger on the good guy, the good guy’s friend that you forgot about because they got separated way back in Act 2, suddenly shows up to score a bad-guy head-shot, and save the day.
Bonus points if the good guy’s friend isn’t revealed until the bad guy’s body falls out of the way.
The women spend an inordinate amount of time washing their breasts in the shower.
The computer monitor projects lines of colored light onto the computer guy’s face.
A bunch of people who know there’s a killer on the loose all split up and go out of sight of each other. Bonus points if they start walking backwards at any point.
Someone enters a house/room/cellar/office and the light switch doesn’t work, but he/she proceeds into the space anyway. You fool! Don’t you hear the ominous music?
Someone walks through a drenching downpour to get to his lover, because he’s really, really sorry, and nothing says “I’m Sorry” like the smell of wet wool and underwear stuck to your ass.
I would say this is just movie shorthand - sort of like how dashboard lights always illuminate the passengers faces. Not that it’s not bullshit, but to me its more about artistic lighting rather than bad fiction.
The ever-present MAP OF THE EARTH, which shows projections of a pandemic starting as a small red blotch, until it exponentially grows consuming the entire earth (even in the arctic and antarctic regions) in a matter of a week.
This is almost always on a gigundous screen in some darkly lit situation room.
HEY! I LIKED “Billy Madison”! 
And I loved “24”!