Some personal faves.
RASTAN (arcade)
http://www.youtube.com/watch?v=xPWEYzPMmdo
BLADES OF STEEL (NES)
http://www.youtube.com/watch?v=9Zfn_ape5Qw
NINJA GAIDEN 2* (NES)
http://www.youtube.com/watch?v=TmS80HRjrks
*all of the music in the entire trilogy is great.
PAPER BOY (arcade) - always had a soft spot for that one
http://www.youtube.com/watch?v=5byxOWx9SV8
LEISURE SUIT LARRY (PC) - yeah, I'm a perv.
http://www.youtube.com/watch?v=1zx3pWcBI2Q