Margaret Edson's play, Wit, is a fun one to look at. Even though the play is not separated into Acts, it is fairly easy to break the text down into scenes. Try the Grand Rounds scene. This is where Jason and the other med students are pointing out the effects of the chemotherapy on Vivian. Vivian and Kallekian bond in this scene because the students completely miss the obvious effects of the drugs. Jason proves to be a show off, and Vivian feels like a text that is being studied, much like she studied the works of Donne. You can comment on character development, tone, irony, and theme with just this short scene.