Slice of life is a depiction of mundane experiences in art and entertainment. In theater, slice of life refers to naturalism, while in literary parlance it is a narrative technique in which a seemingly arbitrary sequence of events in a character’s life is presented, often lacking plot development, conflict, and exposition, as well as often having an open ending.
Been a while since I’ve watched it but Kids (1995) might qualify as fitting the category (not sure if it’d be a “best” though).