I'm currently going through the junior year of my high school, that was 20 years ago exactly. It has been 22 years since my favorite baseball team, the Boston Red Sox, had finally broken their Curse of the Bambino in 2004. The Harry Potter main book series ended 19 years ago while the film series ended 15 years ago.
I felt rather disconnected from youth/young adult fashion when those brokkoli hairdos became widespread. I wasn't ever particularly interested in fashion anyway, but those look like complete ass to me.
Also, Skyrim release was 15 years ago and they keep reminding you of their old-ass game by rereleasing it instead of a successor (I doubt it would be any good, anyway).