I'm getting a little worried; I'm beginning to run out of ideas for these lists of pet peeves. Perhaps I'm not such a grumpy old man after all.
This is really nitpicking, but one thing that tends to annoy me happens when I tune the TV to catch the start of a particular programme; let's call it "Programme X". The continuity announcer then says something like "Next up, Programme Y", to which my immediate reaction is "Huh?". The announcer then goes on to say "But, before that, Programme X". I tend to confuse easily and that gets me every time. There's one channel that puts up notices on the screen "Next: Program Y", and "Later: Program Z". They'll then start showing Program X.
A similar annoyance is when the announcer says, for instance, "Now, Programme X" followed by several minutes of commercials. The announcer means "After you've sat through us trying to sell you things, we'll start Programme X", and should reserve using "Now" for the immediate future, not for in four or five minutes' time.