1. People that come up to you while you are eating your lunch at work and say "Oh, sorry to disturb your lunch.... BUT". But what? You know you're beig rude but you're going to ask me to do something for you anyhow because you are too impatient to wait until I've finished my break?
2. People who complain about rude barstaff. What would you like the lass behind the bar to do while she is pouring your drink - regale you with stories of her childhood? Get real man. Its a bar, it's loud and there are probably 10 people lined up behind you bitching about how slow the service is.
Julia Gillard Deputy Leader of HM Opposition. She's on the radio nearly every day and has the most bloody grating voice I've every had the displeasure of hearing.
ooh i HATE lawyers!
People who interrupt while you are busy. or helping some other incompetant fool with their work.
people who cant do anything for themselves.
Meetings in general, because 9 times out of 10 they're a complete waste of time, and you simply sit there regurgitating everything you've done for the past week instead of being constructive and working towards your actual goals.