I loved the HBO Mildred Pierce. I'd never read any Cain, so I read the book in preparation for this one to be aired, and for the most part it's an incredible novel. That made seeing it all the more rewarding, and I so loved its look of real film.
I have a special interest in the depiction of locations in movies, and tend to be a hard grader, but I thought most of the trickery of this one, having been filmed on Long Island (?), was impressive -- except for that one causeway-like bridge and the beach grass which betrayed its East Coastedness. But, I loved it.