This is based on opinion. Please don't list it on a work's trope example list.
Nightmare Fuel / Deep Impact
When a fissure in the asteroid expels a forceful plume of gas that pushes Jon Favreau up and back, so quickly that he flies off the ground and begins to float away. The idea of just floating, with no control over your course or speed, unable to see what you are heading toward, watching solid ground fade into the distance, and just waiting to die, still terrifies.
The meteorite crashing into the Earth and the HUGE MEGATSUNAMIS destroying everything has left more than a few paranoid about possible catastrophic meteorite impacts.
The sacrifices some people make, namely take my baby and run. They're going to die and they don't even know if the baby will live.