The ability to quote Monty Python, Douglas Adams, etc at a moment's notice.
The ability to drink and still look as if you are solving a very difficult puzzle.
The ability to curse a machine. More points if you use more than one language.
The ability to have impromptu discussions on technical pieces at a moment's notice.
The ability to know that this will still be here tomorrow.
Patrick
Quand on parle du loup, on en voit la queue