I've mentioned here before about my favorite Doom soundtrack being the music by Aubrey Hodges for the PlayStation incarnation of Doom. But no matter how much I babble on about it, nothing I say can really compare to simply letting you hear it for yourselves:
But let's not forget that Mr. Hodges also created similar music for Doom64 for Nintendo. Many of these tracks have a more "techno" feel than their PSX counterparts in my opinion, but still do just as well to set the ambient mood for a sci-fi/horror shootout:
ALTAR OF PAIN
EYE OF THE STORM
WATCH YOUR STEP
Now be honest: doesn't hearing these make you want to play Doom with them?