Angels in America, Part One: Millennium Approaches (1992) and Part Two: Perestroika (1993) by Tony Kushner
Early in the play, Prior is diagnosed with AIDS and his lover, Louis, doesn't deal well with this news, to put it mildly. Joe and Harper's relationship is also crumbling; they are supposed to be good Mormons, but Joe has been repressing his true self for quite a while and Harper is mentally ill.
I can see that this is a great story and I think watching a production would be rather spectacular, but I'm afraid that the reading experience wasn't great for me. I had such high hopes after A Raisin in the Sun, but this is just such a complicated play that it didn't come through as well on the page for me.
I don't know if this is a play that gets performed often, but I'll keep an eye out for a production because I think I'd really like to see it. In the meantime, I know that HBO made it into a mini-series and I may check that out. I'm a bit daunted by the length - it's about 6 hours and the two volumes together are only about 260 pages, so they must have added a lot to it - but I've heard it's very good.