The BBC wrote up an article on extended job descriptions.
From the comments;
"My boss in the bank was always going on about targets and "vision" and as I didn't have a job title he was thrilled when I came up with my own - Sales, Lending and Vision Executive. Of course when I put it in as the reference in a letter I got into trouble for using the acronym SLAVE. - Isla Biggs, Durham"
and
"I once had the pleasure of meeting Kevin Mellett, Nasa's man in charge of refitting space shuttles between flights. Pompous job title? Not a bit of it. On his business card he simply describes himself as "Rocket Scientist". -
Ewen McLaughlin, Swansea"
That made me chuckle.