Barcroft TV: Weird Documentaries On Weird People - A goldmine of WTF moments.

[~ Drama Llama Ding Dong ~]

For the record if you want more professionalish documentaries, but just as weird, Real Stories ia a great similar channel. Most of their fare is standard normal documentaries like the invasion of iraq, or orthodox jewish culture, or bomb disposal, children of drug addicts, etc, but occasionally they throw a curveball like these two:

The subjects are just as weird and fucked up, but more informative and less openly exploitative.

Real Stories is another great channel where you can find weird documentaries as well. I've been subscribed to them for a while now.