I'm very fond/familiar with Starcraft music, probably terran themes>zerg>protoss (there's one protoss I like a little more).
Also every time I open one of these threads I end up feeling like Data - like 5 different songs playing at once...but a lot of you guys have good taste. Also I agree Klepacki's stuff is good, only really ever played a little Command and Conquer though, not the other games.
Lastly the civ series I respect of course for good classical choices - but an extra shout out to the civ modders around here who've done good jobs on their mods (FFH with Nox Arcana music in particular sets a really good mood, but we all know their whole team is great).