See also:
Best VGM 248 - http://www.youtube.com/watch?v=-L45Lm02jIU
Best VGM 468 - http://www.youtube.com/watch?v=WCGk_7V5IGk
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.
SNES / Arcade
Super Street Fighter II
Guile's Theme
Isao Abe & Syun Nishigaki