"Lexx" is an amazing german-canadian sci-fi series and the music seems to fit that classical style: https://www.youtube.com/watch?v=OFRe4nl8ugM

Not exactly sci-fi and not exactly classical, but Les Revenants (The Returned) comes pretty close on both counts:
https://www.youtube.com/watch?v=MP9evk0f7Qg

How is it nobody's mentioned Legend of the Galactic Heroes yet? It's the best animated space opera I've ever seen and definitely gives Star Wars a run for its money, not to mention its score is comprised entirely of classical music.

Here's the first episode (it has well over 100 episodes):

https://www.youtube.com/watch?v=R9ktgN80MP4&list=PL79E5a0wBpi63v5gPBgCXSZocon5ZzTlP

Wow, didn't know John Barry did this, +1 for you.

This one too (though technically not Sci-Fi). Meh, classical music is overrated, Star Wars would have been so much better if the went for the disco version.

Disco.....Disco destroyed so much:

https://www.youtube.com/watch?v=u7isxoTIeYM

Pfff, Kiss destroyed itself and you won't ever see North Korea partying with their music, nor Metalica's or Iron Maiden's for that matter.

Dude!? Hating on KISS? Bogus!

Also, for a bonus Jack Kirby/Hanna-Barbera fueled KISS mindfuck- enjoy!

Hating? I don't care enough about them to give them that honor.

What he said. 10/10 anime

Ha, I never thought about the disco influences in that track before! I also never noticed the similarity between the SS in the KISS logo and the logo for the Nazi SS.

Little known gem, Saturn 3 should be included

Blade Runner + Vangelis

I would as well.

I would especially like to see more people active in the subforums. It's annoying when I post a question in the Elder Scrolls subforum (for example) and get no response.

Yeah, but it does depends on the subforum too. The few I monitor where I feel I might be able to answer game related questions are pretty devoid of activity most of the time, and a lot of times the questions that are asked are about technical problems with the game. Then it is really cool to see how typically a lot of people try to help and sort out the OP's problem.

Back on topic, the ending music of Interstellar:
https://www.youtube.com/watch?v=sf9mGrl4PJM

That's one of the first things I check out when I want to see the quality of a film's music. It's opening theme if it has one, and then the music that plays during the credits. Often the most beautiful music is left for last.

Eh KISS has already sold itself out a LONG TIME AGO.