Discovering a Maiden world, a very great temple to the emperor that is empty or a misery world ---- >The Host of Seraphim - Dead Can dance

Ice ring, void apparition -- Anywhere out of the World (again Dead can Dance) (it as a build up feel to it)

RT to RT ship war, or a forge world war --- War for territory (Megadeath) (obvious with all the metal sounds)

For clearing out cultists, or scummers or the like:

Bodies by Drowning Pool

Ambience/Fighting: official Dawn of War 2 Soundtrack by Doyle W. Donehoo (you can download it free, as far as I know).

The music in the Homeworld game series also works wonders. Though now I can't name a single song as I seem to have lost the soundtracks.

How about that Intro score from the old Star Trek series right after William Shatner's narration

peterstepon said:

I wonder why I didn't think of that?

Singapore by Tom Watts

Lightyears from home by Primal Fear

Pretty much anything by XRay Dog. It's a group that does the dramatic music for movie trailers.

http://www.youtube.com/watch?v=8tfCaQuJOAw <- Using this as the game main theme atm, as an example.

The same kind of group as X-ray Dog, Audiomachine :

this is the music we use when we use ominously our starship for all kinds of shenanigans.

Dj DeadMou5 (Dead mouse)