See also:
Best VGM 66 - http://www.youtube.com/watch?v=vaJvNNWO_OQ
Best VGM 153 - http://www.youtube.com/watch?v=HFKtYCcMWT4
Best VGM 700 - http://www.youtube.com/watch?v=heD3Rzhrnaw
Best VGM 914 - http://www.youtube.com/watch?v=jXGaW3dKaHs

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.

NES
Megaman 2 (1989)
Flashman Stage
Manami Matsumae, Yoshihiro Sakaguchi & Ogeretsu Kun