A cinematic pet peeve of mine

Absolutely.
A problem I have encountered lots of times, specially with a several of my older DVD copies from Anchor Bay that came with no subtitles/closed captions, and terrible sound whenever people spoke, then when you turned it up to hear what the thell was going on, suddenly the music comes in and the volume goes automatically up to 11.
My old copy of the horror film Demons 2 was more scary than the film itself, as it really lived its own life, and the volume was all over the place whenever something "scary" was to happen, or a song got played, but once people began to talk, the dialogue was just down to a complete mess.

I have always been annoyed by how most films handle love and sex. I dont get how most films think it's normal for two characters who seem to have no connection at one point and are head over heels the next. I'm not saying its impossible but it's not something that happens often. 

Yes, this drives me crazy.  I love a good score, but it can be too much if these two basic mixing things aren't done well...

-EQ/mixing:  New scores are so bass heavy it drives me crazy.  Particularly with large-scale movies, there is often this low frequency hum that accompanies EVERY music cue.  Older movies often only utilized live orchestras or bands, but new scores are padded by synthesizers.  By no means do I think this is a bad thing, and some composers do it quite well (Zimmer with "Gladiator").  Even scores such as the first "Pirates of the Caribbean" that sound like orchestras, have some subtle padding.  It's been getting worse though.  "Batman V Superman" had an interesting score, but there is this persistent rumble that is reminiscent to riding in an airplane.

-Balance/mixing:  Sometimes a good score can get irritating if it is mixed above the dialogue.  Editors do this with the sound effects too.  Modern horror has been the worst offender.  While I can look past the low budget and sometimes limited experience of the sound guys, screwing this up can be really detrimental to the movie.  I hate having to crank my speakers to hear the dialogue and two minutes later a jump scare blows out the glass in all my windows.

Bad EQ on the dialogue is annoying too.  Vin Diesel's voice is a good example of one that really suffers if the EQ is bad.  (Those who maybe aren't sure what I mean, the balance of low, mid and high frequencies in the sound production).  Diesel has enough natural bass in his voice, that he can get really muddy if they crank the bass on his mic.

Sorry for the novel.  My job has bits of audio production involved, so I'm kind of a nerd about this sort of thing.

My pet peeve: I cannot stand all the distracting studio logos these days. It seems like every film is produced/distributed by 50 different studios who all need to draw attention to themselves with a ten second short film to begin the movie. It's distracting, especially when they have a completely different style (i.e., technological as opposed to period piece)from the film that is about to start.

Aaargh.

Exactly, how hard is it for you to sit through a 10 second studio intro?  Even studios deserve some credit for marketing the movie and the main idea is to introduce the viewer to their brand and familiarize them with what kind of company it is. Without  brands, there wouldn't be any fanbases left in this world. And that's a bad thing! 

I guess you missed the part where I said 50 studios.  It isn't one, it's five and they're all obnoxious.  And I couldn't name a single one of them so there's no point.  They aren't telling me 'what kind of company it is,' they're flashing a meaningless logo in front of me, in the midst of ten other logos before and after.  It's a jumbled mess of imagery that distracts the audience before the film even begins.  It's annoying. 

Thanks for explaining the purpose of advertisements though, I had always wondered what value they had.    

Yes.

It's not just a matter of whether you can hear the dialogue, it's that the music is unnecessary and distracting, and takes away from the drama.  There are scenes of dialogue which would be more poignant and powerful if you left out the musical score.  Just my opinion.