Being a huge fan of Bette Davis (although Joan Crawford gave a fine performance also), i would say this is her on top form. She is at her sinister best in this movie. Who can forget the scenes where JC looks to see what's for dinner and get's more than she bargained for? Still hard to watch, even now. At times you feel so uncomfortable seeing her tormented like this (by her sister), you feel a great deal of compassion for her plight. This film was intelligently done, as, at the heart of it are psychological issues (suffered by baby Jane), and although she is downright cruel to her sister, towards the end of the film you can't help but have some empathy towards her) A classic, not to be missed.