What are some things in movies/tv shows that bother you, distract you, or just annoy you in general?
I'll start with one of mine: When a character is on the phone, the audience doesn't hear/see the person they're talking to, and the actor doesn't pause long enough for the other person to reasonably have time to respond.
Something along the lines of this: "Hello? Speaking. Is that right? Well, I'll be...No, no don't do that. I'll be right over" with hardly a fraction of a second pause for the other person to speak.