A lot of these have probably been mentioned and there's some stuff I forgot but here goes:
Lord of the Rings - I didn't think you could still make an epic Orchestral score that didn't sound generic, The Red Violin, Requiem, For A Dream, Pi, Snatch, Fight Club, 28 Days Later, Rushmore, Royal Tenenbaums, Lost in Translation - Kevin Shields
, The Virgin Suicides by Air, Kids - haven't seen the movie but Slint is cool.