Has Lucas heard of the Redead from Zelda? THERE'S a sound that'll make you shit yourself (or maybe it's that they suddenly lunge at and rape you - I can't remember which).
Oh god. I've been playing Ocarina of Time again* and those things freak me the hell out as much as they ever did. That sound, dear lord that horrible horrible sound . . . the low groaning when they're just standing there, then that piercing screech when they spot you, and then the necromancy rape if you can't get away . . .
It's one of the most terrifying things ever, except somehow it is simultaneously awesome, just because it's so freaky! ;)
*I'm playing the uncensored original version with the real Fire Temple music, the Islamic chanting which was unfortunately cut and replaced in later re-issues.