RocketTheme.com now offers a few free templates that are of genuine quality. We highly recommend them. Click here and then on FREE TEMPLATES on the top menu.

JoomlaShack.com also offers a few free templates. Click here and then on Free Joomla Templates.

The following have a BIG selection of free templates but the quality is usually not as high as the mentioned above.

Joomlaya.com has a huge selection of free templates that are also worth a look.

Mambohut.com has a collection of free templates at

http://www.mambohut.com/component/option,com_remository/Itemid,123/