On this week's quiz, we're talking about TV shows that lasted for nine seasons.
More often than not, the reason - other than popularity, of course - why TV shows last for nine seasons is often down to syndication. Usually, TV studios want enough episodes so that they can repeat them on a daily or weekly basis without audiences getting bored or flicking over too easily.
So, as always, no Googling, no cheating and if you've got an idea for next's week TV quiz, let us know in the comments!