Those people that just can't cope with silence and feel that they 'have to' talk

Sitting opposite one today in the office. I am trying to get on with me werk ...no honest I am ...but he has to just keep waffling on about something.
I have put my headphones in and he still gabbers on ..and then waves to attract the attention. FFS ...what does headphones in the ear mean to anyone else !!!!!
he has absolutely nothing to say accept just repeat everything - explain his latest phone conversation ( which has no relevance to me) etc etc etc
I need my own planet built please !!!!