People who don't reverse into parking bays, then take ages when reversing out coz they can't see if any things coming.
When an interview is on the radio, and the host, after asking his question, repeatedly clicks his mouse or types stuff on the computer keyboard. It takes my attention from what the guest is saying.
Its more noticeable on 5live.
Get a rubber keyboard for heavens sake!
While I'm on about radio stuff, when you can hear the dj breathing into the mic, it's more audible on dab.