Insanitious is a free theme from SlackrThemes that keeps a clean, and very readible look. The borders around the edge and bottom kind of give it a cool 3D feeling.
Here are some of the features of the theme:
* Fluid width
* Widgetized sidebar
* Gravatars in comments and front/single pages
* Threaded comments
* Links to digg, and others on bottom of each post
* Paginated pages, comments
* Minimal images used
* 2 Column theme
* Favicons in footer, easy to sell
As always please leave some comments, feedback, or just say how much you hate me! :D Enjoy!