My favorite performance nominated for Best Actress at the Oscars each year. "Read notes" for further rankings of the years' slates of nominees and info on what I haven't seen.
(Holy shit, I'm underwatched here. Almost considered not even bothering with this one considering how little I've seen, but some public shaming might spur me on in catching up with the leading ladies.)
* = the actual Oscar winner
Years where I've only seen one nominee will be skipped.