Dazed and Confused (1993)
This film about the final day of school for a group of high-schoolers (freshmen and seniors, mostly) before the summer holiday of 1976 is one of the best examples of capturing the time-spirit of the 1970s on film. This was Richard Linklater's first big-budget movie and the title which gave him a name in the business, and the film still stands as one of the alternatives for his magnum opus (along with Boyhood, arguably). There's a sense of instantaneity to all the mundane doings and meanderings of these kids, and that underlines the whole point of this recapturing of youth: How seemingly meaningless situations take on all the meaning in the world in the eyes of the teenager. Because what is life? This is life. And for these kids, life would never again be as filled with meaning, hope and potential - all of which most of them will waste away.