There’s plenty of crappy Spaghetti Westerns with brilliant scores, often by Ennio Morricone. The best example would be Death Rides A Horse - not the worst film I’ve ever seen, but a deeply average one, with possibly Morricone’s best score.
Velvet Goldmine stank like a dead walrus. The soundtrack, however, in which a bunch of 90s British and American musos collaborated to cover both cover 70s glam orginals and offer their own takes on the genre, was a thing of wonder and beauty.
I was never a huge fan of Friends, but the soundtrack was great. Toad the Wet Sprocket, Hootie, Joni Mitchell, REM, Paul Westerberg, Lou Reed, Barenaked Ladies.
A perfect example of this phenomenon in TV would be The Heights, from back in 1992. The soundtrack was vastly superior to the show, and I think played longer. “How Do You Talk to an Angel?” was a little cliche, but it worked.
I am vaguely interested in finding the soundtrack to Killer Klowns From Outer Space (the title song by The Dickies is one of the greatest rock theme songs ever recorded for a movie) but I don’t think I want to pay $101.52for it.
I always looked at that movie as nothing more than a commercial for the album. Movie sucked, made no sense, was somewhat torturous, the album was one of my favorite Prince works ever.