So many video game music tracks to talk about so little time so I'll just list four (For now) Complete with Download links...
Track 1. Katamari on the Swing.
Game: We Love Katamari
An awesome J-swing tune that sets the mood for more quirky katamari rolling action.
http://gh.ffshrine.org/song/241/4
Track 2. The Super Mario Brothers Theme.
Game: Super Mario Brothers (And Others)
Oh come on, who can forget the age old classic?
http://gh.ffshrine.org/song/1963/20
Track 3. Ryu's Theme
Game: Street Fighter 2 (And Others)
What better what way to dragon punch ones way to victory, then to this heroic sounding fighting tune.
http://gh.ffshrine.org/song/1327/4
Track 4. Time's Scar
Game: Chrono Cross
IMHO the sequel to Chrono Trigger wasn't as good as its predecessor, but I'll be danged if this Celtic inspired song doesn't get me pumped up every time I hear it.
http://gh.ffshrine.org/song/63/1