I just ran across some free WordPress themes... and there are a lot of great looking ones.  I thought I would pass along the link. 

100 Superb WordPress Themes for Free

The themes are loosely grouped in:

• Designer (20)
  
• Clean (20)
  
• Magazine Style (60)
  

With just a quick glance through, I grabbed 5 themes to try out on my new toy blog.  I am building an online business card/curriculum vitae... I guess for fun.  I don't really need it, but I also wanted to make sure that I owned my name with a .info... I might have to go pick up the .mobi sometime, too... 

I have to admit that I like playing in the themes.  I like to change them, but I have to control myself on the business sites because I want the branding to be consistent.  But, on a play site I can change it up a little more...  It is also nice to have a test site. 

There is also  a related site with the...

35 Best WordPress Themes for Free

There are some cross-overs, but there are also some themes that aren't on the other list... 

Of course there are thousands of free WordPress themes out there.  And you do need to be careful when selecting a free theme.  Many of them have embeded links that you can't remove in the footer.  Most are only to give a link-back to the creator of the theme, but some aren't links you want on your site... especially your branded business site.

Here are some things to think about when you decide on a theme.

***Update***

I realized that I wasn't very clear.  This discussion pertains to WordPress in the self-hosted variety... WordPress.org, not WordPress.com.