Why is that in mysteries/suspense movies, nobody ever hears anyone sneaking up on them, and nobody ever smells dead bodies before seeing them?    The characters walk, even run, through buildings surreptitiously without others in the area hearing them, and people will walk right up to, and stumble over, a long-dead corpse, with apparently no clues beforehand that there's any decaying matter about.

"Titanic" was full of unbelievable things. E.g., Kate Winslett running through frigid sea water up to her middle, in a sheer gown for 15 min or more, with her muscles & joints apparently not affected by the icy water, then staying alive on top of a floating piece of wood for well over an hour. This in the same movie where Leo DiCaprio, earlier in the film, dissuades her from considering jumping off the ship by pointing out that you'd be dead in about 4 min. if you were in that water.

It's distracting to me when movie characters use verbal idoms that are blatantly out of place for the time. E.g., idioms that were spawned by technological developments - e.g., "turned on," "tuned in," etc. - that occurred much later than the period of the film.

And a LOT of songs are used in movies that are set in times long before those songs were composed or generally known.

TV westerns of the 1960s and 1970s often had the characters wearing hairstyles of those decades, though set in the late 19th or early 20th C.

How about all the spare time - not to mention privacy - that medical interns and residents always seem to have on TV doctor shows to "get it on" in the supplies closets?

Thelma and Louise make the cop get into the trunk of his police car and try to leave the audience with the impression that he will be OK, when he is eventually found by someone after who knows how long in the hot desert sun inside that 'oven', because they have shot a few "air holes" into the trunk.