It strikes me that I wrote about these films before but if I did I can't find the post in the archive so I'll take another stab at it. In my opinion these are among the best dramas of the last half century. Glengarry is the best play about the dark side of making a living; Marty is the best play about finding someone to love.
Notice that I didn't say Marty was the best romance. Marty isn't a romance, rather it's about needing people and survival in the relationship jungle. I like it because it's about a subject that's really important. It's amazing how many dramas are about unimportant things. Animated films are often about learning to be yourself, which surely rates at the bottom of any objective list of important themes.
Glenngary is about how serious work is and how easily work can be taken away from you. You have to work to live yet work is not a right but more like a kindness that an employer bestows on you and can withdraw at any time. I don't mean to attach any political interpretation to this, I'm definitely not a Marxist, I simply note that it's surprising that something as vital as a job is apt to be so fraught with insecurity.
In modern society we're no longer independent hunters or farmers but rather supplicants with our tin cups out, hoping that someone with a job to offer will look kindly on us. It seems odd because philosophy and religion describe each individual as immeasurably important yet in another way we don't seem to be important at all. It's a puzzling icongruity which David Mammet presents without comment.