"Big Wednesday" is a good movie best watched when you're in a pensive mood. It's a surfing movie by John Milius, set in 1960s California and focused on a group of pals, but it's really about growing up. Occasionally it touches sentimentalism, but all in all it's quality. At the very least its beach sequences are a BAP-like depiction of surf fascism. Fair warning: it might give you some sympathy for Boomers.
YouTube: https://www.youtube.com/embed/BjicPwDOm14