A jump scare may be an unoriginal way to shock an audience but dammit when it's done right, at just the right moment, it works. Enough to make you jump out of your skin. Obviously horror is the genre that it calls home but it's used in various cinematic instances for some pure, unashamed audience manipulation.
In Burger Fiction's "This Supercut Will Make You Jump" they edit together, in no particular order, their top 40 jump scares—the best times they thought that a director through misdirection or just plain editing pulled one over on us. And it's a good list, edited together seamlessly.
Featuring classics like Carrie which ended the movie on one, and A Nightmare on Elm Street which did the same.
Along with more contemporary films like Sam Raimi's Drag Me to Hell, a movie which is pretty much one big, long series of jump scares tied together. It even features a couple of jump scares from non-horror movies, like The Dark Knight and The Lord Of The Rings: The Fellowship Of The Ring.
There's a whole nine minutes of them, and if you do as the video recommends and watch it with the lights down on full screen, then prepare to be freaked out. just make sure you have a pillow to hand to hide behind.
And you definitely will jump, at least once. Even if you pretend to yourself you didn't.