Some of my favorites:
John Barry's From Russia with Love, Goldfinger, Thunderball, You Only Live Twice, and On Her Majesty's Secret Service.
Carter Burwell's Miller's Crossing.
Clint Eastwood's Mystic River.
Randy Edelman and Trevor Jones's The Last of the Mohicans.
Danny Elfman's Batman, Dick Tracy, Batman Returns, and Hulk.
Michael Giacchino's Medal of Honor (VG), Lost (TV) and Speed Racer.
Philip Glass's Kundun.
Elliot Goldenthal's Titus.
Jerry Goldsmith's Chinatown, Star Trek: The Motion Picture, Star Trek V: The Final Frontier, and Rudy.
James Horner's Star Trek II: The Wrath of Khan, Star Trek III: The Search for Spock, The Rocketeer, and Braveheart.
Maurice Jarre's Enemy Mine, Fearless, and A Walk in the Clouds.
Michael Kamen's Brazil.
Ennio Morricone's A Fistful of Dollars, For a Few Dollars More, The Good, the Bad and the Ugly, Once Upon a Time in the West, Two Mules for Sister Sara, Once Upon a Time in America, The Mission, and The Untouchables.
Lennie Niehaus's Unforgiven (partly composed by Clint Eastwood).
Michael Nyman's Gattaca and The End of the Affair.
Basil Poledouris's Conan the Barbarian.
Alan Silvestri's Cast Away.
Brian Tyler's Children of Dune (TV).
John Williams's Jaws, Star Wars and sequels/prequels, Superman: The Movie, Raiders of the Lost Ark and sequels, and Saving Private Ryan.
Hans Zimmer's True Romance (riffing on the score for Badlands), The Thin Red Line, and Gladiator.