Those soundtracks ya'll have cited above are outstanding and are a big reason why we repeatedly watch those films (By the way, I'd like to toss in A Bronx Tale; the acapella is in a league by itself.). But for me, the best by far, is in Goodfellas where Jerry Vale sings Pretend You Don't See Her as the camera pans the mobsters in the nightclub room. To see the faces of those mobsters so pacified in contrast with their hardened selves was brilliant staging.