This is the movie that gave us the phrase "Klaatu barada nikto!" As befits the film that kicked off the Atomic Age's obsession with flying saucers and giant robots, Bernard Herrmann's score is the last word in 1950s sci-fi. Although many of its elements have become cliches over the years, the original has lost none of its power. Thanks to the many eerie, theremin-drenched passages, it's almost impossible to hear that instrument without thinking about guys in space suits. Other great moments: tinkling space pianos, ominous robot monster chords, and weird, plangent orchestrations. One of Herrmann's most visionary and influential scores.