I think she gives probably the worst performance EVER. Literally. At least in a major motion picture.
Close, but I think Eli Wallach saved her in the same movie. Also the guy who co starred with John Wayne in the Green Berets was pretty bad...David Jansenn I think.
"Io sono stanco, sono imbigliato, and I wan't everyone here to know, there ain't gonna be no trouble from me..Don Corleone..Cicc' a port!"