Come, Conan - what is best in life? Surely it is to be tasked with assembling a list of the finest gaming soundtracks, surfing aural rainbows of Youtube footage to pluck tender, rousing or sobering hymns from the internet's mighty gizzard. But hush, Conan! Though all-conquering, your words are needless here. From this point on, our ears will do the talking. Erm.
I've picked two songs per soundtrack to illustrate the awesome. You're more than welcome to post links of your own in the comments, or in our prosperous forum music recommendations thread. Enjoy.