See also:
Best VGM 327 - http://www.youtube.com/watch?v=QNd4WYmj9WI
Best VGM 440 - http://www.youtube.com/watch?v=IQDiMzoTMH4

A collection of my favorite videogame music. Note that most of them are from games I played so I might miss some great ones from games I never played.

PC
World of Warcraft: Wrath of the Lich King
Mountains of Thunder (Storm Peaks)
Russel Brower, Derek Duke & Glenn Stafford