I'm still working on that "creepy music" I posted an early version of, and I need a few screams, shrieks, moans, or bursts of maniacal laughter for it. Does anyone have a microphone and is willing to contribute a creepy sound or two? For that matter, I may still be able to use totally non-creepy voice clips (even something totally mundane like "15 minutes could save you 15% or more...") if I can garble them enough in Audacity to make them sound disturbing.

That depends. Is slight background static a problem?

And what kind of non-creepy clips will you be seeking?

Mild static is fine, since I'll probably use "wahwah" or other distortion effects on them anyway.

The music is for a zombie-infested mental hospital, so it can be pretty much any short quote that might sound creepy when repeated or distorted in an unsettling way (or heard with a theremin playing over it!).

Here's a few lines from a FPS I've worked on that you might be able to fit in, though with a bit of work. They were pre-edited for the sake of being deeper in tone.

The ones I figured that would fit the zombie setting the most:
"I'm gonna make you so dead, you won't be alive anymore!"
"I know you're there..."
And this one too, but barely:
"Kill it to pieces!"

Trick around with those (slow 'em down, warp 'em, reverse 'em, etc.) and they just might work.

The moans and stuff (the things you actually asked for) will come along a little bit later, and might actually be usable.

I might be able to use those - especially the "I know you're there," being the kind of level that's supposed to play tricks on your mind (when the insane radioactive zombies aren't trying to eat you, that is).