An excellent choice. May I recommend "The Gin Game" with
Jessica Tandy and her husband, Hume Cronyn. This is the 1981 film. I love this one. It was filmed on stage. I use to show it to my theatre students every year. There is also a 2003 version with Dick Van Dyke and Mary Tylor Moore. I believe you can find it on YouTube among other sites. Let me know what you think.