Do it til you're satisfied . . . or don't

And now for the writing portion of the program. I just happened to be tooling around the internet when I found this article from the Romance Writers of Australia on the do's and don'ts of writing paranormal romance. I especially like Nancy Strickland's iceberg analogy of world building.

I'm really trying to build my library of paranormal/fantasy sci fi at the moment, so tell me who are your favorites?  What do you like about these particular authors/stories?