only 3? damn, that's a tough one..
My choices:
- Adventures of Robin Hood (or The Sea Hawk...mmm..any Korngold) - Erich Wolfgang Korngold
- Vertigo - Bernard Herrmann
- Any major work by Max Steiner
In addition, some other GREAT GREAT works:
- The Red Shores - Brian Easdale (a personal favorite, from the 1947 Powell & Pressburger Film)
- Alexander Nevsky - Prokofiev
- Any Aflred Newman, have you heard his colaboration with Herrmann on "The Egyptian"? it's awesome
- Citizen Kane, Jayne Eyre, Psycho, Obsession, The Day The Earth Stood Still, Taxi Driver... - Bernard Herrmann
- Chinatown, Star Trek: Motion Picture, The Omen - Jerry Goldsmith
- Star Wars - Indiana Jones - John Williams
- Once Upon a Time in the West - Ennio Morricone (i saw him conducting last march here in chile)
- Lord of the Rings Trilogy - Howard Shore
- Edward Scissorhands - Danny Elfman
- Laura - David Raksin
- Lawrence of Arabia - Maurice Jarre
- The Incredibles - Michael Giachinno (one of my favorite "young" composers)
- Suspiria - Goblin (Dario Argento italian horror movie)
Miklos Rosza, Elmer Bernstein, Franz Waxman, Hugo Freidhoffer, etc etc etc