Please add to this list.
  1. "He's standing right behind me, isn't he?"
    And lo and behold, that person is. I don't think the situation is annoying necessarily, just when the set up is so obvious and the character says the exact line above.
  2. "Are you lying? I know you're lying. You always [insert weird twitch] when you lie."
    After which the accused says no and does the weird twitch.