The Best Movie sound Tracks

Can you tell me your opininons on the best Movie Sound Tracks out there that makes your system really sound its best. Some older remaster pieces, like Henry Mancini's greatist including "Peter Gunn" sounds very thin and compressed. Why is that so. Appreciate all you info.

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If you can find one, a compilation of Alfred Newman's work
that will include the sound track from "The Prince of Thieves." As with all of Newmans work, it is simply incredible.
Come on guys! No one has yet mentioned Bernard Herrmann! Undoubtedly the greatest soundtrack composer ever. "The Day The Earth Stood Still" "Psycho" "North By Northwest" "Citizen Kane" "Journey To The Center Of The Earth" "Mysterious Island" "Sisters" "Jason And The Argonauts" "The Seventh Vouage Of Sinbad" "Farenheit 451" "Marnie", various "Twilight Zone" episodes, and more.
And let us not forget other great film music composers like Dimitri Tiompkin, Max Steiner, Elmer Bernstein, Franz Waxman, Jerry Goldsmith, and Eric Korngold.
I'm pleased to see that respondents to this post have listed real soundtracks, not pop music compliations which rule the sales charts these days.
"Pulp Fiction" and "Blown Away" are ones I actually listen too as opposed to just own.