The French Connection
They just don’t make movies like this anymore. Something like a third of the film is just people walking. But it’s still some of the most tense walking ever. That’s to say nothing of that famous car chase. This movie has no automatic weapons. Nothing blows up. No Michael Bay sweeping camera shots. The characters are flawed and gritty. And (spoiler alert) in the end, the bad guys get away.
Highly recommended.