I’ve only got a few such as [ul][li]Pulp Fiction[]Resevoir Dogs[]The Doors[]Man, I hate to admit it but Mortal Kombat []Rush[/ul][/li]
There is one that I really really want and that is the soundtrack to Easy Rider, but AFAIK it’s been out of print with no timeline for re-release. But man, what a killer movie with an awesome score. Sure wish I could find it anywhere…
What do you own?
I own South Park: Bigger, Longer, Uncut", and that’s it. I do own 2 Broadway soundtracks, A Chorus Line and Evita.
I need to boost my soundtrack collection.
Robin
I own about 300. Very few song compilations, most are original scores. Impossible to pick my favorite, but I’m partial to the ones I have that are out of print or that I bought in Europe and aren’t available commercially in the U.S.
The Last of The Mohicans
Batman
Forrest Gump
Also a few compilations like:
Stars Wars trilogy (released long before TPM).
Mozart at the Movies.
I also have some on cassette like American Grafitti and Full Metal Jacket.
Not quite 300, but:
Pulp Fiction
Resevoir Dogs
Priscilla Queen of the Desert
Natural Born Killers
Kids
Pump Up the Volume
Magnolia
Boogie Nights
Dirty Dancing
More Dirty Dancing
Labyrinth
Les Miserables
Cats
Jesus Christ Superstar
Dazed and Confused
Some of them I only have on tape…one of these days I’ll get the CD versions.
Top Gun
Rocky IV 
(I got both of these when I was a wee youngun’. Still got the tapes though)
Phantom of the Opera
Rent
(In case either of those quality)
Jurassic Park
Aladdin
Forrest Gump
It’s not technically a soundtrack… but it contains the songs that are in The Highlander–
A Kind of Magic
And the King Daddy of my Soundtrack collection–
Flash Gordon!
[singingFlash! Aaaaaaaaaahhhhhhhhhhhhhuuuuuuuuuuuh![singing]
I’ve got quite a few. But the crowning jewel would have to be Genghis Blues, autographed by Kongar-ool Ondar.
Is this the one with Eye of the Tiger?
Crouching Tiger, Hidden Dragon (Disappointing)
Amistad
Baraka
Henry V
Dune
Hamlet (from both Ken Branagh’s and Mel Gibson’s versions)
Glory
Gettysburg
Braveheart
Peter Gabriel’s Passion (theme from Last Temptation of Christ. Best soundtrack ever.)
Last of the Mohicans
Conan the Barbarian
Gladiator
The Good, the Bad, and the Ugly
Yellow Submarine
Fear and Loathing in Las Vegas (Excellent)
High Fidelity (Also excellent)
Baseketball
Anima Mundi
Big Lebowski
Dragon: The Bruce Lee Story (Sucks)
A Fistful of Dollars
Lord of the Rings (The Bakshi version: sounds distressingly like the theme to Hogan’s Heroes)
Magnolia (both the orchestral music and the Aimee Mann album)
Grosse Point Blank (both discs)
Trainspotting (both discs)
Powasqaatsi
Patriot Games
Rob Roy
The Wall
The Wedding Singer
The Truman Show
O Brother, Where Art Thou?
Terminator 2
Some Mother’s Son
1492: Conquest of Paradise
Pulp Fiction
Straight to Hell
That’s all of them.
Susperia
Profondo Rosso
Dawn of the Dead
Straight to Hell
Zombie! vs. Mardi Gras
Peter Gabriel’s Passion (Hey, Miller bolded it.)
Gettysburg/The Blue and the Grey
Top Gun
Trainspotting
Pulp Fiction
1941 (A great score!)
Natural Born Killers
The Crow
The Great Rock and Roll Swindle (We miss ya, Sid!)
Amadeus
Cosmos (okay, a teevee show, but…)
The Right Stuff
I’m sure there are others, but that’s all I can thing of right now.
I only have two: Ten Things I Hate About You (I LOVE Letters to Cleo’s version of “I Want You to Want Me”) and William Shakespeare’s Romeo + Juliet. I HIGHLY recommend the latter even if you hated the movie. Des’ree’s “Kissin’ You” is a gorgeous love ballad, Radiohead’s “Talk Show Host” is sultry and angry at once, and it just rocks 
Top Gun
Broken Arrow
Armageddon
Disney I (mix of different songs from their movies)
Disney II
Tarzan
Good Morning Vietnam
City Of Angels
Titanic
That’s pretty funny, because Paul Pena gave me my copy.
Of my ~300, here’s a rundown of the composers I have the most of:
Bernard Herrmann: Citizen Kane, The Day the Earth Stood Still, The Ghost & Mrs. Muir, Taxi Driver, Farenheit 451 (collection), Cape Fear (collection), Hitchcock collection (Psycho, Vertigo, etc.), Fantasy collection (Jason & the Argonauts, etc.), The Twilight Zone (w/Goldsmith)
Jerry Goldsmith: Under Fire, Logan’s Run, The Blue Max, Alien, Patton, Planet of the Apes, The Omen (2-disc collection), Star Trek (collection, w/Horner), The Twilight Zone (w/Herrmann)
Franz Waxman: Bride of Frankenstein, The Spirit of St. Louis, The Nun’s Story, Sunset Boulevard (collection), Legends of Hollywood (2-disc collection)+ lots of bits & pieces in other collections
Ennio Morricone: The Good, the Bad, and the Ugly, Cinema Paradiso, The Mission, The Untouchables, Investigation of a Citizen Above Suspicion, Legendary Italian Westerns (collection), A Fistful of Music (2-disc collection), The Singles Collection (2-discs)
Needless to say, I’ve also got Steiner, Korngold, Newman (Alfred, Randy & Thomas), Barry, Tiomkin, Bernstein, Horner, Williams, Elfman, Prokofiev, Poledouris, Zimmer, Delerue, Mancini, Legrand, Jarre, Nyman, Young, Arnold, Walton, Webb, Rozsa, Rota, North, Auric, Rosenman, Copland, Schifrin, Portman, Friedhofer, Shore, Goldenthal, Isham, Howard, Takemitsu, Bernard, Burwell, Theodorakis, Grusin, Stothart, Deutsch, Glass, Jones, and others.
Add to that the musicals (stage & screen), song compilation soundtracks (Big Chill, Pulp Fiction, etc.), and TV soundtracks.
And there’s still so much more that would be so great to own…
Really? And I was thinking of adding it to my collection.
I’ve got 120+ CDs and a few LPs. I don’t know about the rest of the hoarders here, but my collection grew while I was doing a movie soundtrack show at the college radio station. In fact, I might have acquired more if I hadn’t been using the station library, which had titles like “Pulp Fiction” et cetera. Also, I gave my sister a lotta juicy stuff, like all the Disney albums, and the Menken/Ashman “Little Shop of Horrors.”
Some of my prizes:
-as complete a Danny Elfman collection as you’re likely to find, including “Wisdom,” “Big Top Pee Wee” and “Nightbreed.” Also “Summer School” – a song compilation with one Elfman track – and the Oscar sampler of “Good Will Hunting.”
-AKIRA
-Terminator: Definitive Edition (and also the version with the songs)
-Transformers the movie (absolutely rotten music, but it brings back memories)
-The Muppet Movie on LP
-Young Einstein (a “Serious” motion picture soundtrack). I snatched this from a trashcan, and have never listened to it.
-and Orgy of the Dead starring Criswell, complete with dialog.
Notting Hill
Moulin Rouge
That’s all I think! I used to live with someone who had the Interview With The Vampire soundtrack, which wasn’t too bad - oh, and one of these days I’m going to buy me a new copy of The Little Mermaid soundtrack! And maybe Pleasantville.
Clerks
Don Quan Demarco (never seen the movie though)
Batman Forever
Basquit
If Lucy Fell (aka Mary Me Jane’s self-titled. Rent the movie, it explains…)
William Shakespeare’s Romeo and Juliet
White Man’s Burden
Singles
Empire Records
I Know What You Did Last Summer
I Still Know…
Lost Highway
Escape From LA
The Crow: City of Angels
Grosse Point Blank
Varsity Blues
There are many more I meant to get, but…haven’t yet. 10 Things… and The Wedding Singer top that list.
Profondo Rosso
Suspiria
Six String Samurai
Tank Girl [sub]the soundtrack was good, ok[/sub]
Southpark Bigger longer & uncut
“Lahh lahh lahh lahh lahh lahh lahh…”
You have great taste. 
Tank Girl! How could I forget I have that?
And…
Beetlejuice
Edward Scissorhands
Music for a Darkened Theatre
Complete soundtracks:
Crouching tiger hidden dragon (liked it btw)
Schindlers list
Merry christmas Mr Lawrence
Antarctica
Peter Gabriel’s Passion
Planet of the apes (the original)
and, uhh,
Titanic :o
In addition, a large number of compilation CD’s with film music composed by e.g. Prokofiev, Shostakovich, Arnold, Williams, Herrmann, Elfman, Goldsmith, Waxman, Bax, Sakomoto, Takemitsu, Schurmann and many others…