The Breakfast Club's widespread fandom has leaked into all kinds of pop culture. Shows from Family Guy to Community have all paid tribute.
It makes sense: Movies that appeal to older adult audiences can become really famous, but don't usually manage to become cult movies (or get a prolonged following) because the people who watch them aren't really into geeking out about pop culture.
But teens have their whole lives ahead of them. They have time to care about the minutiae of the Star Wars trilogy (the original trilogy) or go deep into the idiosyncrasies of John Hughes's oeuvre.