Inception is the one I listen to probably the most. Dream Within A Dream, Time, Dream is Collapsing, Mombasa, all of them are perfect. I loved how Hans Zimmer used Edith Piaf's Non, Je Ne Regrette Rien as the basis for the entire soundtrack; it's one of the best ideas I've seen executed and really ties the movie narrative and the soundtrack together. Time I want played at my funeral.
The Dark Knight Trilogy has some good tracks, although they're mostly repeats of the general A Dark Knight theme. Except for Rises, which has Gotham's Reckoning in it, which I adore. Although, I quite prefer the Nokia trailer version over the actual one included in the soundtrack.
Interstellar is also great. I'm a huge fan of Mountains.
Lord of the Rings overall has a fantastic lineup that's very mythological, fantastical and Celtic inspired at the same time.
Pirates of the Caribbean is fun and quirky and weird, just like it's main character. I also quite fancy Singapore.
The Social Network is what I listen to when I have a hard time with the forum server. In Motion, Intriguing Possibilities, Painted Sun in Abstract and Pieces Form the Whole are my mains. When I get really angry or decide to do something devious, it's Magnetic.
Game of Thrones has the best intro song ever. Also, all the character themes. And who are you, the proud Lord said, that I should bow so low...
Breaking Bad is very dark and methodical. Also a great intro song. Hisenburg especially is something I listen to a lot.
Red vs. Blue has utterly amazing tracks, both by Trocadero and Jeff Williams. Bloody Mary Mix, Daydream No. 9, First Wave, Another One Down and Contact are great ones by the former, Agent Tex, Plagnam Extremam Infligere, The Pelican has Landed, Extraction, Round 1/Bullfight, Maniacs, Pelican Cruise/Infiltration, Falling Towards the Sky, Sharkface/Rooftop, Hell's Angel, Spiral, and oh so much more from the latter.
RWBY is a fantastic show with fantastic music and you should listen to it all. Everything is great. Everything.
Firefly has some bloody amazing folk, so much so that it has it's own "Firefilk" subgenre. Definitely check it out.
Games will come later because yeah.