Agree with lots above. I also think Carlito's Way, The Harder they Come and Boogie Nights were good.
John Williams is a true genius of themes/soundtracks. Jaws, Star Wars, Indiana Jones, ET (lots of Spielberg I guess). Play any of these scores and we all what movie it came from and even remember the scenes..
Musically I believe the early BonRAB were also great, up to about the 80s perhaps. John Barry is a genius too, his best of compilation album is fantastic. He's responsible for loaRAB of amazing stuff in films and TV.
Lisa Gerrard is also very good, seems to have worked a lot with Hans Zimmer. Gladiator, Black Hawk down.........