I have two main pet peeves:
1) Sex scenes. God how I hate those sheets that the woman pulls up to cover herself, first she's a wild animal of desire - sex in movies is always "perfect" - and then she's shy and modest and covers her chest? I get it, it's not a porn, you can't show naked people, I'm fine with it. But seriously, 80-90 years after sex scenes started to appear in movies still no director found a better solution to the nudity problem than "she covers up her chest with a lot of sheets"? it takes me away from the movie and into reality.
This is even funnier-not-funnier when the movie or the TV series is adult oriented enough to show actual nudity, and so all you see is "Hey, this actress has a no nude clause, this other one doesn't".
2) Foreign people speaking in their own native language because it sounds cool and exotic and then switching to english.
You're two japanese people speaking in your own mother tongue, why you have to say "Sayonara" and then go back to english? Peter Jackson littered the LOTR movies of elves speaking a dramatic sentence in elven language among themselves, and going back to english in the middle of the conversation.
Either translate the whole movie, or do like Tarantino in Inglorious Basterds and have everyone speak always their mother language. English but the "catchphrase" spoken in chinese, japanese, elvish or whatever just sucks.