"Christianity without tears - that's what soma is."
Mustapha Mond, _Brave New World_
I love dystopias. I've read a large proportion of the dystopian novels they list(and plenty they don't list that they should), and seen about half of the movies.
Unfortunately the whole idea of what makes up a dystopia is hazy. I'm reading Perdido Street Station right now, which is somewhat dystopian, but is there any real social analogy to giant soul-sucking moths? Well, there's TV, I suppose. But I digress.
Anyway, this site is a great resource.