Killer/Nifty retro soundtracks/ingame music.

[imzu]

Even thought eh FM chip in the Megadrive was inferior to the SNES, it was the muscians talents that mattered. Favourites are:

Mickey Mouse: Castle of Illusion
Thunderforce II
Super Shinobi (see track 'Sunrise Boulevard')
Hellfire

It's a good thing that Japanese games tend to have a soundtest mode :-)

On the SNES:

All of Final Fantasy VI, never been bettered IMHO. The ending sequence with the medley of characters themes had me in tears.

[wheelaa]

Golden Axe
Gunstar Heroes
Streets of Rage 2
Super Shinobi
Guardian Heroes
Halo
Final Soldier
Aria of Sorrow
Probotector
Double Dragon
Prince of Persia SoT
Zelda OoT

[Kubrick]

C64 Music is what it's all about. Grab SIDPlay and enjoy some classic SID Soundtracks

Sanxion, Commando, Rambo: First Blood Part II and the Ocean Loader are a few of my favourites.

[gamerade]

anything that isn't red-book CD audio, chip music still rules in most cases with me. C64/Amiga/MD/Snes/PCEngine, too many to mention but also with some of the remix mp3/CDs exceptionally well done. Back in Time / RKO64 / Amiga Remix etc. Very rarely listen to recent game soundtrax, they don't stand alone outside playing the games. Stick on some Hubbard, Galway, Hulsbeck, MON, Hippel.....C=

[wheelaa]

How could I forget metal Slug? Awesome music that complements the game to perfection.

[ShadowDancer]

Glad streets of rage 2 was mentioned, the music in the game is superb i think.

[Jet Set UNITED]

Zone 2 Act 2 in Sonic and Knuckles.
...nuff said