Hehe. I wanted to mention it too. I am a big Ska and reggae fan and surely know about this thing and probably love it. Nearly every "Early Reggae" DJ plays some songs of this thing. But it is not connected to the music of the movies. It is only that there is a voice at the beginning of almost every song, that quotes a film. Like: "Faster than Eastwood, tougher than van Cleef, rougher than Django.... Trinityyyyy" or "What can I do for you Mister? I'm the Undertaker. - Make me three coffins brother....my mistake, make it four." and so on.
And then the nice Skinhead/Early Reggae music starts and within that music there are the quotes again. Understood?