The more I watch this, the more ahead-of-its-time it becomes. Robin Williams has done such great work in his career that it feels reductive to say that this, one of his earliest films, is his finest performance, but, well, it really is. He's not afraid to dive deep into what a fuck-up and a hypocrite Garp is, but also how much Garp struggles in being a good person and a good husband and father. He's flawed as all get out, but William's puts the drama of those flaws front and center. He's astonishing.
Then there is Glenn Close in her first screen performance and she is so goddamn good. All the empathy and soul that John Lithgow gives Roberta. Mary Beth Hurt is marvelous in her anger as well as her love for her family.
GARP is one of the very best films of the 1980s. If you've never seen it, remedy that immediately.