I liked her in The Sandpiper, a lesser known movie with Richard Burton in 1965.
http://www.imdb.com/title/tt0059674/
And her and Burton in Who's Afraid Of Virginia Wolf is an epic performance of the bitterness and inner rage of a marriage long done.
Cat On A Hot Tin Roof with Paul Newman - her slinky walk around the bedroom - as well as "A Place In The Sun" with Montgomery Clift and "Giant" with Rock Hudson are my favourites.
I believe she was the first actor - male or female - to demand and receive $1 million for a picture and the first to demand and receive a share in profits of a picture.
On the set of The Sandpiper in 1965 - with a Sandpiper in hand - probablyy at the age of 32 at the time of filming.
Cowperson