Is Farscape obscure enough?
If not, how about Blueberry? See http://imdb.com/title/tt0276830/
Blueberry’s quite bad though, as far as mystic westerns go.
One thing to remember about your collection is that people will see your actual taste in movies, so you might not need that Children Of The Corn collection, or every Chained Heat movie ever made. I’d like to have a definitive zombie movie collection, including crap like Oasis of the Zombies, but they’re hard to find, and mostly only worth watching once.