This guy used to produce Coldplay. His piano-heavy instrumental TV themes are subtle and appropriate to a range of moods. An enjoyable soundtrack to real life, too!
John Carpenter's dark cues for dated horror films using classic synth sounds totally gets me. You can only hear one track on the Lost Themes album but hey, it's John Carpenter.
Matthew M. Nielson's collection of original Sherlock Holmes themes for a theatre production really captures the steampunk sound of which I'm a big fan!