An INCREDIBLE Film and great performance by Florence Bates!
Laurence Olivier and Joan Fontaine are both incredible, as is the head maid, but I really want to give a shout-out to Florence Bates, who plays Mrs. Edythe Van Hopper and is in the first 20 minutes of the film as the employer of Fontaine. She is absolutely sensational in her few scenes, in particular when she signals for Olivier to come by her table, and flaunts over him while downing Fontaine. Also- how about when she says "She was the beautiful Rebecca Hendrich, you know..." and "DON'T DAWDLE!!!" When she tells the next Mrs. Dewitt that she has no characteristics to be a great lady, its said with the poise of a stuffy, wealthy woman who looks down on those beneath her social status. A great performance in a great film.
You can also find Bates in the I Love Lucy episode "Pioneer Women", as a rather similar character.