Semiologic
Multiple column, feature rich theme with support for advanced templates, panels and header picker
Mystique
Mystique is a free WordPress theme that attempts to top commercial templates in terms of design and functionality. Some of the features include 3 theme widgets (Sidebar tabs, Twitter posts and Flickr gallery), page templates with different layout styles and many more theme options…
Minimalist Love
Two column, widget and gravatar ready theme
Are you a theme author? Submit your theme to get them listed in these posts.
I really like the Free themes from the DigitalNature.ro team , they are really high quality
Mystique, has really nice features
Great themes! I think all these three are useful and easily navigable. But i must say the mystique theme is the best, firstly its free :P, but i think i like it more becuase of its functionality and the widgets, today no blogs is complete without twitter posts and adding the flickr gallery will make the blog more happening.
great post loves those themes, thanks!
I love Mystique! Would probably use larger font for the main content though for use in-practice.