Buffy the Vampire Slayer: Post-modern morality play or semi-pornographic soap opera?
Both at once? Check the episode where the tears of the repentant sinner -- which he can shed once he stops telling stories about his life and starts really living it again -- close the mouth of hell. Or Spike's little discourse on blood. Josh Breeden may be an atheist and may despise Christianity, but despite himself he says some good stuff and says it well.