Yes. Learning that on the piano is now a goal.
Birdy
A Clockwork Orange
Indiana Jones and the Temple of Doom
And I love John Carpenter’s work from the 70s and early 80s, particularly Assault on Precinct 13, Halloween, and Escape From New York.
The Fountain was a mess of a movie, but had an excellent score.
Master and Commander
Conan the Barbarian and The Hunt for Red October. Love love love Basil Poledouris scores.
Seconding Immortal Beloved & The Commitments. Adding Trainspotting. Glad for MP3s after replacing those CDs several times.
The High and the Mighty. My all-time favorite movie theme.
I love that in Die Hard almost all of the background music is “Ode to Joy”. It’s played at various tempos, with different instruments to convey the mood of what is happening at that point in the movie.
For what it is, Joe Dirt has a pretty good soundtrack.
Whenever someone mentions that they’re going to watch The Third Man (one of my favorite movies ever BTW) I always tell them “When you’re done watching, you’re gonna have one burning question, and the answer is ‘zither’.”
Amen. And kinda sorta in that vein, Hair…except every time I watch it, as I just did, “for the music”, I realize that I’m not crazy about what they did to the music, either.
Amadeus, check. Moulin Rouge, check.
Rent. Love the music. The movie is made of meh, but the musical performances in it are solid.
Across the Universe. Actually, that feels like cheating, because I love the story/characters/visuals as well, but I have put it on before I go to sleep, because just the music and I “see” the movie in my head.
…
Either I didn’t notice it was there a LOT, or I’ve forgotten. Will have to remember that next time it comes on. 
Oooh, yes. I have several of the songs from the soundtrack mixed in with my stuff. I really, really love their version of ‘I Just Saw A Face’ and it’s impossible not to bounce happily around when I hear it.
I’ve never seen the stage show so I don’t have anything to compare it to but I had a friend in college who introduced my to the soundtrack. I listened to that soundtrack hundreds of times and had it memorized forwards and backwards before I ever saw the movie. I believe the soundtrack that you would hear on the radio or buy in the store is the movie version (Treat Williams, Beverly D’Angelo etc). For a while when my (at the time 4 or 5 year old) daughter would wake up I’d say “Good morning starshine” and she’d reply “the earth says hello”.
Awww. I grew up with Hair - The American Tribal Love-Rock Musical (1968 Original Broadway Cast), on cassette tape, no less, and performed in a truly dreadful, horrifying community theater production of it once. I find the movie’s versions jarring.
Chocolat (2000) starring Juliette Binoche featuring the music of Rachel Portman.
Moulin Rouge
Driving Miss Daisy
Rocky Horror
Pulp Fiction
Little Shop of Horrors
Star Wars IV-VI I really can’t believe no one said that
Dr. Horrible’s Sing-Along Blog which is actually a musical, but whatever - if you haven’t seen it, please do
Dances with Wolves just an awesome score - John Barry won an Oscar for it
Gladiator - the vocals by Lisa Gerrard (from Dead Can Dance) are fantastic
Any Cameron Crowe movie: Vanilla Sky, Almost Famous, Elizabethtown, Singles, We Bought a Zoo… the man has a great ear for music.
Ditto Wes Anderson.
I was going to say pretty much anything scored by Tangerine Dream, but especially Sorcerer and Thief.