SuperBlog
Light and clean theme for personal blogs. Three column, widget ready.
HalfCircle
HalfCircle , comes with theme option, embedded flickr widget to display your flickr image and other features.
Sextant Globe
A very simple free WordPress Theme 1000px wide with 1 Sidebar and an Option Page to populate the Footer.
5 Free Sport Wordpress Themes
As spring progresses and the weather
More at: http://weblogtoolscollection.com/archives/2010/04/13/wordpress-theme-releases-for-0413-2/