Mine'll win the vote for being the dullest job: administrator working in a transport office.
Basically I waste most of my life trying to make sure so called 'professional' drivers carry the correct paperwork and abide by the laws some dozy EU beaurocrats dictate to keep VOSA happy. The rest of the time I spend hours compiling reports that nobody really looks at or understands.
The good points of my job are that nobody really understands most of what I do but they know it's legally necessary, so I get left well alone to pick my nose and surf the internet during quiet periods.