Main kinds of contents:
- fiction, which includes movies & series. Can be animated or not, TV or not.
- non-fiction: documentary & "tv-shows" for things like top gear, reality shows, etc.
- music videos

I know that "TV show" is a bad name (it is a literal translation from French), but TV special is not better, it seems even less explicit to me... And something like that Alan Pardrige special should rather be somewhere with the series and TV movies than with the non-fiction stuff.
The main question is how to name that non-fiction not-documentary category, we'll see later where to put the case of a special fiction show.