This is getting really pedantic but people who always say "ya know" in conversation.
There's a guy in Dunedin that rings up the night-time talkback on ZB pretty much every night, He says it so often when he rings, I did a count one night. 65 times he said "You know" in a 5 minute conversation. two nights ago, he said it 3 times in row with no other words. If we "knew", then he would need to tell us.
He also kept on saying "For the want of a better word". Thank God he hasn't picked up the "Like" habit from the teenagers today.