Inkkubus Sukkubus work well for Pangea, but mainly I just stick random play on Media Player. I occaisionally get some fitting music (Maiden's Two Worlds Collide just as a bunch of meteors strike the battlefield) but mainly, I get comedy (Click build castle, YMCA starts up...)
games like Dominions make me want to listen to Tool, but in general i just listen to whatever music is in my CD changer, whi is generally some variant of rock. Big fan of hardcore metal and rap-rock hybrid stuff, or anything with guitars and drums where I can't understand a word the vocalist is vocalizing.
Anybody ever play the old Mac game Castles: Siege & Conquest? That was another game with a great soundtrack. Just a few simple songs that I could listen to forever.