I'm looking for a website that has artwork or pictures; mostly headshots that I can use on npc sheets. I find it helpful to have a face to put together with the npc's name, for myself and for the players. Clip art or line drawings will work, and it doesn't need to be 40k genre (that would be nice of course), but I'm trying to avoid doing to much touch up work or editing.

Try google images:

http://images.google.com

For some reason I thought you were asking for pictures of people being shot in the head.

Shows where my mind is...lol

Joe-Momma has a good link, start there. In your Google parameters try using Warhammer Dark Heresy Cyberpunk

I was thinking what the guy above me said.lol

As for images its best to use google or photobucket

imdb.com Internet movie database