Injecting medications into necks.
Medical things are rarely accurate, but Jesus this one is absolutely infuriating. There’s no anatomy in a neck that you could even inject anything INTO. You’re not aiming for a jugular vein on the fly and there’s not enough tissue in a neck to receive an intramuscular or subcutaneous injection. If your needle is too long, you’re definitely hitting something critical. It’s feasible that you could squirt medication into someone’s trachea or esophagus or - god forbid - spine if you actually tried this nonsense.
Arms, people, ARMS. This is where we inject things into people who are not interested in receiving an injection. Arms or butts, right through the clothes. You’re aiming for the deltoid muscle or the glutes. I’m even willing to concede the inaccuracy of a medication affecting someone instantly (they don’t), if Hollywood would just stop having characters inject things into people’s necks.
On our next episode of medical things that make me crazy: People getting shot through the shoulder with zero consequences.
Entire plot lines hinging on people not explaining themselves which would take about 5 seconds.
The only good example I can think of where people actually explain themselves is Agents of SHIELD, which isn’t even a movie. It’s amazing. She doesn’t doubt his loyalty for a second and understands, given their situation, why he had to keep it a secret from her. You still get drama, but it’s drama from everyone being on the same dramatic page.
The idiot plot.
I’m a software engineer, so basically anything involving software/hacking. It’s always inaccurate. (Because accurate hacking is incredibly boring.)
People driving while staring intently at their passenger for way too long.
Concussions. Especially when they are used as plot vehicles where someone is knocked out, and they wake up in a jail cell or whatever.
If you got hit THAT hard on the head that you’re unconscious and unresponsive for hours? You are going to wake up dizzy, nauseated, and disoriented with a huge headache, loss of motor control, and a disorienting tinnitus. Possibly permanently. Your brain swelled up and cut off blood flow. You might look like a stroke victim. You will not wake up, rub your head, then pick a lock in a dark room and construct a bomb with a gum wrapper and a smoke detector battery. You will weep, vomit, and be unable to walk straight until you get real medical attention.
Some action stars get knocked out almost every episode. I think MacGyver would have been mentally incapacitated after just a few shows.