Free stock photography

Morguefile has a decent selection of free stock photography available for download. The images I checked out are just as good as the stuff you'd pay for.
From their "About" page:

1. Are the images really free?
Yes, all images are really free and they can be used in your commercial projects without permission or credit from the photographer. Although selling prints, selling the images directly or claiming the photo is yours is prohibited.
Note: You are responsible for the content of the photos you use. It is very much the same as if you had taken the photograph yourself, you must still obtain proper permission for property or people depicted in the photos if any.