I think the Dementors in the Harry Potter movies are boring. Basically a Black Rider from the Lord of the Rings movies but floaty. If you dressed up as a movie Dementor, you'd have to explain to everyone that you weren't a Black Rider (or the Ghost of Christmas Future, for that matter).
Anyway, I found myself wanting a scarier, weirder Dementor. Here's what I came up with:

As I was drawing this, I had some more Dementor ideas. I'll put some more up as the week goes on. I'm not a fan art guy. But, hey, it's a new year, why not try something new? Right?

Still trying to rebuild my site. I'll keep you posted.