It's, well, interesting to see that particular interests keep cropping up as catching people's attention - I've answered several of them in prior go-arounds of this meme:

bisexuality and maori

Valdemar (also you ;) )

ballroom dancing.

I'm happy to go into more detail, if you wish, or you can pick four different ones to take their place, if you prefer. And I'll answer the others in a future post, promise. :)