A great list of fantastic free themes from 2008 by design blog Made in Mundo.

A great collection of free and premium themes, with some you probably haven't seen before.

TopWPThemes is a great resource where you can find and download many free themes for wordpress. The design of TopWPThemes is really nice with content being easy to locate.

This is a collection of our top 12 in no particular order. Check them out. While most are free, there are few that are not, though they are too good to miss. Tell us about your favorite WordPress themes in the comments.

I present you a list of 31 references to several hundreds of excellent Wordpress themes that I’m sure you’ll want to bookmark!

The post title results from a straight sum of the values present on each of the references. Most naturally several themes - the best ones - are mentioned on more than one post or article.

Think me Wordpress theme is

* Two columns template
* Fixed Width
* Widget Compatible
* Page links Navigation
* Seperated comments and trackbacks
* Excerpt posts for Archive, Category and Search
* XHTML and CSS valid

Open source software is a wonderful thing. It allows a community to grow around an idea and for that idea to develop along with, and because of, that community. Code is moved forward, modified and generally made better. Each member of the community can work freely, unencumbered by anything that might get in the way like copyright, or ownership, or money

Over 50 themes with 1 colum for WordPress (and counting)

Over 200 ( and counting) themes for WordPress with 3 colums

The best free magazine, portfolio and CMS themes for WordPress