The Iceman Cometh by Eugene O'Neill is considered his greatest work. It's pretty good. I haven't read a play for a while, except for the Shakespeare I teach, and reading this one was fun, if a bit disorienting. I'm reminded of how my students must feel confused and frustrated when they begin a play: it's hard to know which characters are important, which stage directions are foreshadowing, etc. After about two acts I was engaged, however. I like O'Neill. He's at once generous to his characters and brutally honest about their human potential for growth.
At its ending, The Iceman Cometh is bleak and nihilistic. It's an ideas play, and while I admire the craft that it took to get there, I never really felt like I was reading a realistic human exchange. This vague inauthenticity may be the author, or the time period, or the medium itself. I like plays, but they don't strike me as believable as a good novel might. Play It as It Lays, Joan Didion's masterpiece, is every bit as much about our inability to overcome self deception, but it felt true the entire time. But I will continue to appreciate good old Eugene O'Neill. Working within his medium, he clearly has important things to say.