Films by Speilberg, and Jim Cameron's Titanic are also great works.
I think, so far, my own personal favorites are stuff from the 1980s and 1990s, but I've also listened to many old classic films which had excellent scores as well.
I think what usually catches my attention the most are the scores for Fantasy and Sci-Fi films, because they often as (as they say) like a character in the film also.
So, let's go through a few right now!
Excalibur by Trevor Jones
Dark Chrystal Trevor Jones
The Last Unicorn
Ridley Scott's Legend: There are 2 versions of the soundtracks, and several re-cut versions of the film.
Original Jerry Goldsmith:
Tangerine Dream (North American) Version:
Tangerine Dream Extended Version:
Dune by TOTO:
I can think of several other ones also.
I gotta tell ya, I LOVED this one so much I had to go buy it after I watched the film in high school! It's REALLY WEIRD!
There's actually tons of great stuff from the 1990s, stuff by Dreamworks, Disney, Anime soundtracks, and all kinds of Sci-Fi summer blockbusters, and even several TV Shows, but I think if I add anymore I will crash people's computers. And, a number from the 2000s also.