Medium Cool, one of my ten or so favorite films of all-time, has a scene where the characters go to a proto-rave and it becomes a music video for Mother of Invention's Who Needs the Peace Corps
. While providing something of a time capsule, it's a bad song and a bad scene that basically serves as a brief detour in the otherwise excellent movie.
I love De Palma's Scarface despite its many problems, certainly chief among them is the absurdly dated and atrocious Giorgio Moroder score. The scene of Tony getting jealous at the nightclub is among the worst crimes ever committed against eardrums.
More broadly, we could just say "80's synth" for damn near any good American movie made during that time period.