On its face, "Diane" is about a saint, a woman so devoted to friends and loved ones that she barely has time to volunteer at a dining hall that serves the less fortunate. Mary Kay Place, in a role she wears like a glove, plays Diane as an angel unaware of her martyrdom.
If you find a dimension intereseting, we recommend you pick up one or two facts that you find intriguing and place them into your memory. That way you will have 2nd degree information about the topic if it comes up in conversation.
Accordingly, you can do the same with others as well.