The Popmatters list of 100 Essential Film Performances of All Time.
The 2009 original and 2012 editions by Matt Mazur and the 2010 edition by the Pomatters staff are all included, for a total of 191 films and 191 performances - both Susan Sarandan and Geena Davis were included for "Thelma and Louise", and all three of the "Before Trilogy" films were put together under Julie Delphy so I have included them all. I did not include the "best of the year" lists.
I was unable to find "The Notorios C.H.O." on here because it is a comedy stand-up show, rather than a film, but it is also included. That's why there are only 190 films on my list.
Which great female performances have you seen?