Some Great Free Still Images

[Chuck Engels]

I have not completely checked this out but most items seem to fall under the Creative Commons license.
http://commons.wikimedia.org/wiki/Main_Page

[Steve Grisetti]

Wow! Those folks at Wiki have done it again!

Note, however, that not everything on the site is completely unrestricted. If you click on an image to get the full-resolution original, it will also bring up the licensing agreement.

Most of the images are in the Public Domain and therefore do have unrestricted use. Others have general use or similar licenses which may require you to contact the photographer or artist to arrange for any "redistribution", which would include any work done for profit.