I’ll go first. Mine is the instant knockout drug. Like Dexter’s intramuscular injection that causes someone to immediately lose consciousness. Or in the movie Split where there’s the aerosol spray in your face that makes you instantly unconscious. Or pretty much any time someone uses chloroform.
For that matter, when someone gets shot center mass and they collapse like Cypher just pulled them from the matrix
It’s preferable to people getting shot and flying across the room, like in a John Woo film.